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Finding the Fourth Proportional to 13,780.53, 19,005.03 and 9,063.90

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Solution

The fourth proportional to 13,780.53, 19,005.03 and 9,063.90 is: 12,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.53 : 19,005.03 = 9,063.90 : x
  2. Step 2: Convert to fraction form
    13,780.53/19,005.03 = 9,063.90/x
  3. Step 3: Cross multiply
    13,780.53x = 19,005.03 × 9,063.90
  4. Step 4: Simplify right side
    13,780.53x = 172,259,691.42
  5. Step 5: Solve for x
    x = 172,259,691.42/13,780.53
  6. Step 6: Final answer
    x = 12,500.22

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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.