Home / 20,843.60-31,222.20-13,801.04

Finding the Fourth Proportional to 20,843.60, 31,222.20 and 13,801.04

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Solution

The fourth proportional to 20,843.60, 31,222.20 and 13,801.04 is: 20,672.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.60 : 31,222.20 = 13,801.04 : x
  2. Step 2: Convert to fraction form
    20,843.60/31,222.20 = 13,801.04/x
  3. Step 3: Cross multiply
    20,843.60x = 31,222.20 × 13,801.04
  4. Step 4: Simplify right side
    20,843.60x = 430,898,831.09
  5. Step 5: Solve for x
    x = 430,898,831.09/20,843.60
  6. Step 6: Final answer
    x = 20,672.96

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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.