Home / 20,898.18-31,358.06-13,883.04

Finding the Fourth Proportional to 20,898.18, 31,358.06 and 13,883.04

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Solution

The fourth proportional to 20,898.18, 31,358.06 and 13,883.04 is: 20,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.18 : 31,358.06 = 13,883.04 : x
  2. Step 2: Convert to fraction form
    20,898.18/31,358.06 = 13,883.04/x
  3. Step 3: Cross multiply
    20,898.18x = 31,358.06 × 13,883.04
  4. Step 4: Simplify right side
    20,898.18x = 435,345,201.30
  5. Step 5: Solve for x
    x = 435,345,201.30/20,898.18
  6. Step 6: Final answer
    x = 20,831.73

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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.