Home / 12,260,941,387.40-18,391,412,081.10-8,391,106,123.40

Finding the Fourth Proportional to 12,260,941,387.40, 18,391,412,081.10 and 8,391,106,123.40

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Solution

The fourth proportional to 12,260,941,387.40, 18,391,412,081.10 and 8,391,106,123.40 is: 12,586,659,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260,941,387.40 : 18,391,412,081.10 = 8,391,106,123.40 : x
  2. Step 2: Convert to fraction form
    12,260,941,387.40/18,391,412,081.10 = 8,391,106,123.40/x
  3. Step 3: Cross multiply
    12,260,941,387.40x = 18,391,412,081.10 × 8,391,106,123.40
  4. Step 4: Simplify right side
    12,260,941,387.40x = 154,324,290,531,690,938,368
  5. Step 5: Solve for x
    x = 154,324,290,531,690,938,368/12,260,941,387.40
  6. Step 6: Final answer
    x = 12,586,659,185.10

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Double scale
Find fourth proportional to 12,260,941,388.40, 18,391,412,082.60 and 8,391,106,124.40
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.