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Finding the Fourth Proportional to 10,425.52, 15,615.12 and 7,458.44

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Solution

The fourth proportional to 10,425.52, 15,615.12 and 7,458.44 is: 11,171.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,425.52 : 15,615.12 = 7,458.44 : x
  2. Step 2: Convert to fraction form
    10,425.52/15,615.12 = 7,458.44/x
  3. Step 3: Cross multiply
    10,425.52x = 15,615.12 × 7,458.44
  4. Step 4: Simplify right side
    10,425.52x = 116,464,435.61
  5. Step 5: Solve for x
    x = 116,464,435.61/10,425.52
  6. Step 6: Final answer
    x = 11,171.09

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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.