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Finding the Fourth Proportional to 16,251.40, 24,386.70 and 11,857.80

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Solution

The fourth proportional to 16,251.40, 24,386.70 and 11,857.80 is: 17,793.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,251.40 : 24,386.70 = 11,857.80 : x
  2. Step 2: Convert to fraction form
    16,251.40/24,386.70 = 11,857.80/x
  3. Step 3: Cross multiply
    16,251.40x = 24,386.70 × 11,857.80
  4. Step 4: Simplify right side
    16,251.40x = 289,172,611.26
  5. Step 5: Solve for x
    x = 289,172,611.26/16,251.40
  6. Step 6: Final answer
    x = 17,793.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.