Home / 12,865.80-17,755.66-7,201.04

Finding the Fourth Proportional to 12,865.80, 17,755.66 and 7,201.04

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Solution

The fourth proportional to 12,865.80, 17,755.66 and 7,201.04 is: 9,937.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.80 : 17,755.66 = 7,201.04 : x
  2. Step 2: Convert to fraction form
    12,865.80/17,755.66 = 7,201.04/x
  3. Step 3: Cross multiply
    12,865.80x = 17,755.66 × 7,201.04
  4. Step 4: Simplify right side
    12,865.80x = 127,859,217.89
  5. Step 5: Solve for x
    x = 127,859,217.89/12,865.80
  6. Step 6: Final answer
    x = 9,937.91

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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.