Home / 12,865.80-17,754.96-7,200.90

Finding the Fourth Proportional to 12,865.80, 17,754.96 and 7,200.90

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Solution

The fourth proportional to 12,865.80, 17,754.96 and 7,200.90 is: 9,937.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.80 : 17,754.96 = 7,200.90 : x
  2. Step 2: Convert to fraction form
    12,865.80/17,754.96 = 7,200.90/x
  3. Step 3: Cross multiply
    12,865.80x = 17,754.96 × 7,200.90
  4. Step 4: Simplify right side
    12,865.80x = 127,851,691.46
  5. Step 5: Solve for x
    x = 127,851,691.46/12,865.80
  6. Step 6: Final answer
    x = 9,937.33

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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.