Home / 20,817.20-31,200.64-12,034.04

Finding the Fourth Proportional to 20,817.20, 31,200.64 and 12,034.04

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Solution

The fourth proportional to 20,817.20, 31,200.64 and 12,034.04 is: 18,036.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.20 : 31,200.64 = 12,034.04 : x
  2. Step 2: Convert to fraction form
    20,817.20/31,200.64 = 12,034.04/x
  3. Step 3: Cross multiply
    20,817.20x = 31,200.64 × 12,034.04
  4. Step 4: Simplify right side
    20,817.20x = 375,469,749.79
  5. Step 5: Solve for x
    x = 375,469,749.79/20,817.20
  6. Step 6: Final answer
    x = 18,036.52

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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.