Home / 20,291,219.28-28,000,825.20-11,587,691.52

Finding the Fourth Proportional to 20,291,219.28, 28,000,825.20 and 11,587,691.52

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Solution

The fourth proportional to 20,291,219.28, 28,000,825.20 and 11,587,691.52 is: 15,990,410.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291,219.28 : 28,000,825.20 = 11,587,691.52 : x
  2. Step 2: Convert to fraction form
    20,291,219.28/28,000,825.20 = 11,587,691.52/x
  3. Step 3: Cross multiply
    20,291,219.28x = 28,000,825.20 × 11,587,691.52
  4. Step 4: Simplify right side
    20,291,219.28x = 324,464,924,723,042.31
  5. Step 5: Solve for x
    x = 324,464,924,723,042.31/20,291,219.28
  6. Step 6: Final answer
    x = 15,990,410.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.