Home / 20,831.76-31,260.06-8,354.52

Finding the Fourth Proportional to 20,831.76, 31,260.06 and 8,354.52

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Solution

The fourth proportional to 20,831.76, 31,260.06 and 8,354.52 is: 12,536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.76 : 31,260.06 = 8,354.52 : x
  2. Step 2: Convert to fraction form
    20,831.76/31,260.06 = 8,354.52/x
  3. Step 3: Cross multiply
    20,831.76x = 31,260.06 × 8,354.52
  4. Step 4: Simplify right side
    20,831.76x = 261,162,796.47
  5. Step 5: Solve for x
    x = 261,162,796.47/20,831.76
  6. Step 6: Final answer
    x = 12,536.76

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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.