Home / 13,717.76-20,565.12-5,515.52

Finding the Fourth Proportional to 13,717.76, 20,565.12 and 5,515.52

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Solution

The fourth proportional to 13,717.76, 20,565.12 and 5,515.52 is: 8,268.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.76 : 20,565.12 = 5,515.52 : x
  2. Step 2: Convert to fraction form
    13,717.76/20,565.12 = 5,515.52/x
  3. Step 3: Cross multiply
    13,717.76x = 20,565.12 × 5,515.52
  4. Step 4: Simplify right side
    13,717.76x = 113,427,330.66
  5. Step 5: Solve for x
    x = 113,427,330.66/13,717.76
  6. Step 6: Final answer
    x = 8,268.65

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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.