Home / 12,831.28-17,697.36-8,859.04

Finding the Fourth Proportional to 12,831.28, 17,697.36 and 8,859.04

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Solution

The fourth proportional to 12,831.28, 17,697.36 and 8,859.04 is: 12,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.28 : 17,697.36 = 8,859.04 : x
  2. Step 2: Convert to fraction form
    12,831.28/17,697.36 = 8,859.04/x
  3. Step 3: Cross multiply
    12,831.28x = 17,697.36 × 8,859.04
  4. Step 4: Simplify right side
    12,831.28x = 156,781,620.13
  5. Step 5: Solve for x
    x = 156,781,620.13/12,831.28
  6. Step 6: Final answer
    x = 12,218.70

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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.