Home / 20,732.31-28,615.23-13,177.17

Finding the Fourth Proportional to 20,732.31, 28,615.23 and 13,177.17

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Solution

The fourth proportional to 20,732.31, 28,615.23 and 13,177.17 is: 18,187.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.31 : 28,615.23 = 13,177.17 : x
  2. Step 2: Convert to fraction form
    20,732.31/28,615.23 = 13,177.17/x
  3. Step 3: Cross multiply
    20,732.31x = 28,615.23 × 13,177.17
  4. Step 4: Simplify right side
    20,732.31x = 377,067,750.30
  5. Step 5: Solve for x
    x = 377,067,750.30/20,732.31
  6. Step 6: Final answer
    x = 18,187.45

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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.