Home / 20,131.00-27,780.24-11,178.27

Finding the Fourth Proportional to 20,131.00, 27,780.24 and 11,178.27

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Solution

The fourth proportional to 20,131.00, 27,780.24 and 11,178.27 is: 15,425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.00 : 27,780.24 = 11,178.27 : x
  2. Step 2: Convert to fraction form
    20,131.00/27,780.24 = 11,178.27/x
  3. Step 3: Cross multiply
    20,131.00x = 27,780.24 × 11,178.27
  4. Step 4: Simplify right side
    20,131.00x = 310,535,023.38
  5. Step 5: Solve for x
    x = 310,535,023.38/20,131.00
  6. Step 6: Final answer
    x = 15,425.72

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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.