Home / 20,713.91-28,585.19-11,282.48

Finding the Fourth Proportional to 20,713.91, 28,585.19 and 11,282.48

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Solution

The fourth proportional to 20,713.91, 28,585.19 and 11,282.48 is: 15,569.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.91 : 28,585.19 = 11,282.48 : x
  2. Step 2: Convert to fraction form
    20,713.91/28,585.19 = 11,282.48/x
  3. Step 3: Cross multiply
    20,713.91x = 28,585.19 × 11,282.48
  4. Step 4: Simplify right side
    20,713.91x = 322,511,635.13
  5. Step 5: Solve for x
    x = 322,511,635.13/20,713.91
  6. Step 6: Final answer
    x = 15,569.81

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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.