Home / 20,687,668.96-31,000,010.28-9,890,129.20

Finding the Fourth Proportional to 20,687,668.96, 31,000,010.28 and 9,890,129.20

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Solution

The fourth proportional to 20,687,668.96, 31,000,010.28 and 9,890,129.20 is: 14,820,137.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,668.96 : 31,000,010.28 = 9,890,129.20 : x
  2. Step 2: Convert to fraction form
    20,687,668.96/31,000,010.28 = 9,890,129.20/x
  3. Step 3: Cross multiply
    20,687,668.96x = 31,000,010.28 × 9,890,129.20
  4. Step 4: Simplify right side
    20,687,668.96x = 306,594,106,870,528.19
  5. Step 5: Solve for x
    x = 306,594,106,870,528.19/20,687,668.96
  6. Step 6: Final answer
    x = 14,820,137.90

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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.