Home / 20,381.76-28,182.33-17,757.36

Finding the Fourth Proportional to 20,381.76, 28,182.33 and 17,757.36

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Solution

The fourth proportional to 20,381.76, 28,182.33 and 17,757.36 is: 24,553.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.76 : 28,182.33 = 17,757.36 : x
  2. Step 2: Convert to fraction form
    20,381.76/28,182.33 = 17,757.36/x
  3. Step 3: Cross multiply
    20,381.76x = 28,182.33 × 17,757.36
  4. Step 4: Simplify right side
    20,381.76x = 500,443,779.45
  5. Step 5: Solve for x
    x = 500,443,779.45/20,381.76
  6. Step 6: Final answer
    x = 24,553.51

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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.