Home / 12,516.90-17,272.15-7,480.12

Finding the Fourth Proportional to 12,516.90, 17,272.15 and 7,480.12

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Solution

The fourth proportional to 12,516.90, 17,272.15 and 7,480.12 is: 10,321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.90 : 17,272.15 = 7,480.12 : x
  2. Step 2: Convert to fraction form
    12,516.90/17,272.15 = 7,480.12/x
  3. Step 3: Cross multiply
    12,516.90x = 17,272.15 × 7,480.12
  4. Step 4: Simplify right side
    12,516.90x = 129,197,754.66
  5. Step 5: Solve for x
    x = 129,197,754.66/12,516.90
  6. Step 6: Final answer
    x = 10,321.87

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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.