Home / 14,845.89-20,486.36-8,472.76

Finding the Fourth Proportional to 14,845.89, 20,486.36 and 8,472.76

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Solution

The fourth proportional to 14,845.89, 20,486.36 and 8,472.76 is: 11,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,845.89 : 20,486.36 = 8,472.76 : x
  2. Step 2: Convert to fraction form
    14,845.89/20,486.36 = 8,472.76/x
  3. Step 3: Cross multiply
    14,845.89x = 20,486.36 × 8,472.76
  4. Step 4: Simplify right side
    14,845.89x = 173,575,917.97
  5. Step 5: Solve for x
    x = 173,575,917.97/14,845.89
  6. Step 6: Final answer
    x = 11,691.85

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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.