Home / 20,197.30-27,876.92-13,111.42

Finding the Fourth Proportional to 20,197.30, 27,876.92 and 13,111.42

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Solution

The fourth proportional to 20,197.30, 27,876.92 and 13,111.42 is: 18,096.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,197.30 : 27,876.92 = 13,111.42 : x
  2. Step 2: Convert to fraction form
    20,197.30/27,876.92 = 13,111.42/x
  3. Step 3: Cross multiply
    20,197.30x = 27,876.92 × 13,111.42
  4. Step 4: Simplify right side
    20,197.30x = 365,506,006.43
  5. Step 5: Solve for x
    x = 365,506,006.43/20,197.30
  6. Step 6: Final answer
    x = 18,096.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.