Home / 20,565.73-28,380.99-11,134.27

Finding the Fourth Proportional to 20,565.73, 28,380.99 and 11,134.27

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Solution

The fourth proportional to 20,565.73, 28,380.99 and 11,134.27 is: 15,365.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.73 : 28,380.99 = 11,134.27 : x
  2. Step 2: Convert to fraction form
    20,565.73/28,380.99 = 11,134.27/x
  3. Step 3: Cross multiply
    20,565.73x = 28,380.99 × 11,134.27
  4. Step 4: Simplify right side
    20,565.73x = 316,001,605.53
  5. Step 5: Solve for x
    x = 316,001,605.53/20,565.73
  6. Step 6: Final answer
    x = 15,365.45

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1.5x scale

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.