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Finding the Fourth Proportional to 12,609.76, 18,908.88 and 4,396

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Solution

The fourth proportional to 12,609.76, 18,908.88 and 4,396 is: 6,591.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.76 : 18,908.88 = 4,396 : x
  2. Step 2: Convert to fraction form
    12,609.76/18,908.88 = 4,396/x
  3. Step 3: Cross multiply
    12,609.76x = 18,908.88 × 4,396
  4. Step 4: Simplify right side
    12,609.76x = 83,123,436.48
  5. Step 5: Solve for x
    x = 83,123,436.48/12,609.76
  6. Step 6: Final answer
    x = 6,591.99

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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.