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Finding the Fourth Proportional to 10,614.88, 14,654.64 and 7,089.76

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Solution

The fourth proportional to 10,614.88, 14,654.64 and 7,089.76 is: 9,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,614.88 : 14,654.64 = 7,089.76 : x
  2. Step 2: Convert to fraction form
    10,614.88/14,654.64 = 7,089.76/x
  3. Step 3: Cross multiply
    10,614.88x = 14,654.64 × 7,089.76
  4. Step 4: Simplify right side
    10,614.88x = 103,897,880.49
  5. Step 5: Solve for x
    x = 103,897,880.49/10,614.88
  6. Step 6: Final answer
    x = 9,787.95

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1.5x scale

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.