Home / 15,831.20-23,757.39-8,440.76

Finding the Fourth Proportional to 15,831.20, 23,757.39 and 8,440.76

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Solution

The fourth proportional to 15,831.20, 23,757.39 and 8,440.76 is: 12,666.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.20 : 23,757.39 = 8,440.76 : x
  2. Step 2: Convert to fraction form
    15,831.20/23,757.39 = 8,440.76/x
  3. Step 3: Cross multiply
    15,831.20x = 23,757.39 × 8,440.76
  4. Step 4: Simplify right side
    15,831.20x = 200,530,308.43
  5. Step 5: Solve for x
    x = 200,530,308.43/15,831.20
  6. Step 6: Final answer
    x = 12,666.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.