Home / 13,691.88-20,538.60-4,332.16

Finding the Fourth Proportional to 13,691.88, 20,538.60 and 4,332.16

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Solution

The fourth proportional to 13,691.88, 20,538.60 and 4,332.16 is: 6,498.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.88 : 20,538.60 = 4,332.16 : x
  2. Step 2: Convert to fraction form
    13,691.88/20,538.60 = 4,332.16/x
  3. Step 3: Cross multiply
    13,691.88x = 20,538.60 × 4,332.16
  4. Step 4: Simplify right side
    13,691.88x = 88,976,501.38
  5. Step 5: Solve for x
    x = 88,976,501.38/13,691.88
  6. Step 6: Final answer
    x = 6,498.49

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1.5x scale

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.