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Finding the Fourth Proportional to 10,333.64, 15,489.14 and 4,479

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Solution

The fourth proportional to 10,333.64, 15,489.14 and 4,479 is: 6,713.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,333.64 : 15,489.14 = 4,479 : x
  2. Step 2: Convert to fraction form
    10,333.64/15,489.14 = 4,479/x
  3. Step 3: Cross multiply
    10,333.64x = 15,489.14 × 4,479
  4. Step 4: Simplify right side
    10,333.64x = 69,375,858.06
  5. Step 5: Solve for x
    x = 69,375,858.06/10,333.64
  6. Step 6: Final answer
    x = 6,713.59

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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.