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Finding the Fourth Proportional to 15,012.56, 20,702.04 and 9,043.04

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Solution

The fourth proportional to 15,012.56, 20,702.04 and 9,043.04 is: 12,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.56 : 20,702.04 = 9,043.04 : x
  2. Step 2: Convert to fraction form
    15,012.56/20,702.04 = 9,043.04/x
  3. Step 3: Cross multiply
    15,012.56x = 20,702.04 × 9,043.04
  4. Step 4: Simplify right side
    15,012.56x = 187,209,375.80
  5. Step 5: Solve for x
    x = 187,209,375.80/15,012.56
  6. Step 6: Final answer
    x = 12,470.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.