Home / 13,708.13-20,565.66-6,317.78

Finding the Fourth Proportional to 13,708.13, 20,565.66 and 6,317.78

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Solution

The fourth proportional to 13,708.13, 20,565.66 and 6,317.78 is: 9,478.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.13 : 20,565.66 = 6,317.78 : x
  2. Step 2: Convert to fraction form
    13,708.13/20,565.66 = 6,317.78/x
  3. Step 3: Cross multiply
    13,708.13x = 20,565.66 × 6,317.78
  4. Step 4: Simplify right side
    13,708.13x = 129,929,347.02
  5. Step 5: Solve for x
    x = 129,929,347.02/13,708.13
  6. Step 6: Final answer
    x = 9,478.27

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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.