Home / 12,487.25-17,235.85-7,454.87

Finding the Fourth Proportional to 12,487.25, 17,235.85 and 7,454.87

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Solution

The fourth proportional to 12,487.25, 17,235.85 and 7,454.87 is: 10,289.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.25 : 17,235.85 = 7,454.87 : x
  2. Step 2: Convert to fraction form
    12,487.25/17,235.85 = 7,454.87/x
  3. Step 3: Cross multiply
    12,487.25x = 17,235.85 × 7,454.87
  4. Step 4: Simplify right side
    12,487.25x = 128,491,021.09
  5. Step 5: Solve for x
    x = 128,491,021.09/12,487.25
  6. Step 6: Final answer
    x = 10,289.78

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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.