Home / 12,921.17-17,831.15-7,255.92

Finding the Fourth Proportional to 12,921.17, 17,831.15 and 7,255.92

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Solution

The fourth proportional to 12,921.17, 17,831.15 and 7,255.92 is: 10,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.17 : 17,831.15 = 7,255.92 : x
  2. Step 2: Convert to fraction form
    12,921.17/17,831.15 = 7,255.92/x
  3. Step 3: Cross multiply
    12,921.17x = 17,831.15 × 7,255.92
  4. Step 4: Simplify right side
    12,921.17x = 129,381,397.91
  5. Step 5: Solve for x
    x = 129,381,397.91/12,921.17
  6. Step 6: Final answer
    x = 10,013.13

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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.