Home / 14,780.76-20,397.42-8,493.12

Finding the Fourth Proportional to 14,780.76, 20,397.42 and 8,493.12

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Solution

The fourth proportional to 14,780.76, 20,397.42 and 8,493.12 is: 11,720.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.76 : 20,397.42 = 8,493.12 : x
  2. Step 2: Convert to fraction form
    14,780.76/20,397.42 = 8,493.12/x
  3. Step 3: Cross multiply
    14,780.76x = 20,397.42 × 8,493.12
  4. Step 4: Simplify right side
    14,780.76x = 173,237,735.75
  5. Step 5: Solve for x
    x = 173,237,735.75/14,780.76
  6. Step 6: Final answer
    x = 11,720.49

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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.