Home / 15,512.38-21,397.48-13,527.70

Finding the Fourth Proportional to 15,512.38, 21,397.48 and 13,527.70

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Solution

The fourth proportional to 15,512.38, 21,397.48 and 13,527.70 is: 18,659.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.38 : 21,397.48 = 13,527.70 : x
  2. Step 2: Convert to fraction form
    15,512.38/21,397.48 = 13,527.70/x
  3. Step 3: Cross multiply
    15,512.38x = 21,397.48 × 13,527.70
  4. Step 4: Simplify right side
    15,512.38x = 289,458,690.20
  5. Step 5: Solve for x
    x = 289,458,690.20/15,512.38
  6. Step 6: Final answer
    x = 18,659.85

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Half scale
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Double scale
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1.5x scale

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.