Home / 12,260,941,390.40-18,391,412,085.60-8,391,106,126.40

Finding the Fourth Proportional to 12,260,941,390.40, 18,391,412,085.60 and 8,391,106,126.40

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Solution

The fourth proportional to 12,260,941,390.40, 18,391,412,085.60 and 8,391,106,126.40 is: 12,586,659,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260,941,390.40 : 18,391,412,085.60 = 8,391,106,126.40 : x
  2. Step 2: Convert to fraction form
    12,260,941,390.40/18,391,412,085.60 = 8,391,106,126.40/x
  3. Step 3: Cross multiply
    12,260,941,390.40x = 18,391,412,085.60 × 8,391,106,126.40
  4. Step 4: Simplify right side
    12,260,941,390.40x = 154,324,290,624,625,147,904
  5. Step 5: Solve for x
    x = 154,324,290,624,625,147,904/12,260,941,390.40
  6. Step 6: Final answer
    x = 12,586,659,189.60

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Double scale
Find fourth proportional to 12,260,941,391.40, 18,391,412,087.10 and 8,391,106,127.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.