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Finding the Fourth Proportional to 16,320.84, 24,471.40 and 8,915

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Solution

The fourth proportional to 16,320.84, 24,471.40 and 8,915 is: 13,367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,320.84 : 24,471.40 = 8,915 : x
  2. Step 2: Convert to fraction form
    16,320.84/24,471.40 = 8,915/x
  3. Step 3: Cross multiply
    16,320.84x = 24,471.40 × 8,915
  4. Step 4: Simplify right side
    16,320.84x = 218,162,531
  5. Step 5: Solve for x
    x = 218,162,531/16,320.84
  6. Step 6: Final answer
    x = 13,367.11

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Why These Related Problems?

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