Home / 12,702.80-17,531.16-7,397.30

Finding the Fourth Proportional to 12,702.80, 17,531.16 and 7,397.30

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Solution

The fourth proportional to 12,702.80, 17,531.16 and 7,397.30 is: 10,209.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702.80 : 17,531.16 = 7,397.30 : x
  2. Step 2: Convert to fraction form
    12,702.80/17,531.16 = 7,397.30/x
  3. Step 3: Cross multiply
    12,702.80x = 17,531.16 × 7,397.30
  4. Step 4: Simplify right side
    12,702.80x = 129,683,249.87
  5. Step 5: Solve for x
    x = 129,683,249.87/12,702.80
  6. Step 6: Final answer
    x = 10,209.03

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1.5x scale

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.