Home / 38,242.72-57,381.24-20,692

Finding the Fourth Proportional to 38,242.72, 57,381.24 and 20,692

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Solution

The fourth proportional to 38,242.72, 57,381.24 and 20,692 is: 31,047.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,242.72 : 57,381.24 = 20,692 : x
  2. Step 2: Convert to fraction form
    38,242.72/57,381.24 = 20,692/x
  3. Step 3: Cross multiply
    38,242.72x = 57,381.24 × 20,692
  4. Step 4: Simplify right side
    38,242.72x = 1,187,332,618.08
  5. Step 5: Solve for x
    x = 1,187,332,618.08/38,242.72
  6. Step 6: Final answer
    x = 31,047.28

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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.