Home / 20,870,627.20-31,290,388.80-10,780,489.60

Finding the Fourth Proportional to 20,870,627.20, 31,290,388.80 and 10,780,489.60

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Solution

The fourth proportional to 20,870,627.20, 31,290,388.80 and 10,780,489.60 is: 16,162,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870,627.20 : 31,290,388.80 = 10,780,489.60 : x
  2. Step 2: Convert to fraction form
    20,870,627.20/31,290,388.80 = 10,780,489.60/x
  3. Step 3: Cross multiply
    20,870,627.20x = 31,290,388.80 × 10,780,489.60
  4. Step 4: Simplify right side
    20,870,627.20x = 337,325,711,038,356.50
  5. Step 5: Solve for x
    x = 337,325,711,038,356.50/20,870,627.20
  6. Step 6: Final answer
    x = 16,162,701.19

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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.