Home / 20,713.32-28,584.45-11,281.86

Finding the Fourth Proportional to 20,713.32, 28,584.45 and 11,281.86

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Solution

The fourth proportional to 20,713.32, 28,584.45 and 11,281.86 is: 15,569.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.32 : 28,584.45 = 11,281.86 : x
  2. Step 2: Convert to fraction form
    20,713.32/28,584.45 = 11,281.86/x
  3. Step 3: Cross multiply
    20,713.32x = 28,584.45 × 11,281.86
  4. Step 4: Simplify right side
    20,713.32x = 322,485,763.08
  5. Step 5: Solve for x
    x = 322,485,763.08/20,713.32
  6. Step 6: Final answer
    x = 15,569.00

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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.