Home / 12,290,679.60-18,436,019.40-6,621,975.60

Finding the Fourth Proportional to 12,290,679.60, 18,436,019.40 and 6,621,975.60

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Solution

The fourth proportional to 12,290,679.60, 18,436,019.40 and 6,621,975.60 is: 9,932,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290,679.60 : 18,436,019.40 = 6,621,975.60 : x
  2. Step 2: Convert to fraction form
    12,290,679.60/18,436,019.40 = 6,621,975.60/x
  3. Step 3: Cross multiply
    12,290,679.60x = 18,436,019.40 × 6,621,975.60
  4. Step 4: Simplify right side
    12,290,679.60x = 122,082,870,627,926.62
  5. Step 5: Solve for x
    x = 122,082,870,627,926.62/12,290,679.60
  6. Step 6: Final answer
    x = 9,932,963.40

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Double scale
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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.