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Finding the Fourth Proportional to 15,988.68, 22,064.08 and 8,819.27

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Solution

The fourth proportional to 15,988.68, 22,064.08 and 8,819.27 is: 12,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.68 : 22,064.08 = 8,819.27 : x
  2. Step 2: Convert to fraction form
    15,988.68/22,064.08 = 8,819.27/x
  3. Step 3: Cross multiply
    15,988.68x = 22,064.08 × 8,819.27
  4. Step 4: Simplify right side
    15,988.68x = 194,589,133.98
  5. Step 5: Solve for x
    x = 194,589,133.98/15,988.68
  6. Step 6: Final answer
    x = 12,170.43

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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.