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Finding the Fourth Proportional to 8,913.52, 13,369.47 and 6,988.96

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Solution

The fourth proportional to 8,913.52, 13,369.47 and 6,988.96 is: 10,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.52 : 13,369.47 = 6,988.96 : x
  2. Step 2: Convert to fraction form
    8,913.52/13,369.47 = 6,988.96/x
  3. Step 3: Cross multiply
    8,913.52x = 13,369.47 × 6,988.96
  4. Step 4: Simplify right side
    8,913.52x = 93,438,691.05
  5. Step 5: Solve for x
    x = 93,438,691.05/8,913.52
  6. Step 6: Final answer
    x = 10,482.80

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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.