Home / 20,506.32-30,755.91-5,711.28

Finding the Fourth Proportional to 20,506.32, 30,755.91 and 5,711.28

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Solution

The fourth proportional to 20,506.32, 30,755.91 and 5,711.28 is: 8,565.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.32 : 30,755.91 = 5,711.28 : x
  2. Step 2: Convert to fraction form
    20,506.32/30,755.91 = 5,711.28/x
  3. Step 3: Cross multiply
    20,506.32x = 30,755.91 × 5,711.28
  4. Step 4: Simplify right side
    20,506.32x = 175,655,613.66
  5. Step 5: Solve for x
    x = 175,655,613.66/20,506.32
  6. Step 6: Final answer
    x = 8,565.93

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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.