Home / 12,702.60-17,531.40-7,400.28

Finding the Fourth Proportional to 12,702.60, 17,531.40 and 7,400.28

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Solution

The fourth proportional to 12,702.60, 17,531.40 and 7,400.28 is: 10,213.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702.60 : 17,531.40 = 7,400.28 : x
  2. Step 2: Convert to fraction form
    12,702.60/17,531.40 = 7,400.28/x
  3. Step 3: Cross multiply
    12,702.60x = 17,531.40 × 7,400.28
  4. Step 4: Simplify right side
    12,702.60x = 129,737,268.79
  5. Step 5: Solve for x
    x = 129,737,268.79/12,702.60
  6. Step 6: Final answer
    x = 10,213.44

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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.