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Finding the Fourth Proportional to 15,135.12, 22,713.12 and 5,274.48

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Solution

The fourth proportional to 15,135.12, 22,713.12 and 5,274.48 is: 7,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.12 : 22,713.12 = 5,274.48 : x
  2. Step 2: Convert to fraction form
    15,135.12/22,713.12 = 5,274.48/x
  3. Step 3: Cross multiply
    15,135.12x = 22,713.12 × 5,274.48
  4. Step 4: Simplify right side
    15,135.12x = 119,799,897.18
  5. Step 5: Solve for x
    x = 119,799,897.18/15,135.12
  6. Step 6: Final answer
    x = 7,915.36

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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.