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Finding the Fourth Proportional to 10,479.68, 15,684.96 and 9,327.68

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Solution

The fourth proportional to 10,479.68, 15,684.96 and 9,327.68 is: 13,960.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.68 : 15,684.96 = 9,327.68 : x
  2. Step 2: Convert to fraction form
    10,479.68/15,684.96 = 9,327.68/x
  3. Step 3: Cross multiply
    10,479.68x = 15,684.96 × 9,327.68
  4. Step 4: Simplify right side
    10,479.68x = 146,304,287.69
  5. Step 5: Solve for x
    x = 146,304,287.69/10,479.68
  6. Step 6: Final answer
    x = 13,960.76

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1.5x scale

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.