Home / 12,475.20-17,217.36-7,169.52

Finding the Fourth Proportional to 12,475.20, 17,217.36 and 7,169.52

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Solution

The fourth proportional to 12,475.20, 17,217.36 and 7,169.52 is: 9,894.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.20 : 17,217.36 = 7,169.52 : x
  2. Step 2: Convert to fraction form
    12,475.20/17,217.36 = 7,169.52/x
  3. Step 3: Cross multiply
    12,475.20x = 17,217.36 × 7,169.52
  4. Step 4: Simplify right side
    12,475.20x = 123,440,206.87
  5. Step 5: Solve for x
    x = 123,440,206.87/12,475.20
  6. Step 6: Final answer
    x = 9,894.85

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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.