Home / 38,115.20-52,599-20,887.49

Finding the Fourth Proportional to 38,115.20, 52,599 and 20,887.49

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Solution

The fourth proportional to 38,115.20, 52,599 and 20,887.49 is: 28,824.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,115.20 : 52,599 = 20,887.49 : x
  2. Step 2: Convert to fraction form
    38,115.20/52,599 = 20,887.49/x
  3. Step 3: Cross multiply
    38,115.20x = 52,599 × 20,887.49
  4. Step 4: Simplify right side
    38,115.20x = 1,098,661,086.51
  5. Step 5: Solve for x
    x = 1,098,661,086.51/38,115.20
  6. Step 6: Final answer
    x = 28,824.75

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Half scale
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Double scale
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Similar ratio
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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.