Home / 28,956.31-39,963.24-17,020.76

Finding the Fourth Proportional to 28,956.31, 39,963.24 and 17,020.76

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Solution

The fourth proportional to 28,956.31, 39,963.24 and 17,020.76 is: 23,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,956.31 : 39,963.24 = 17,020.76 : x
  2. Step 2: Convert to fraction form
    28,956.31/39,963.24 = 17,020.76/x
  3. Step 3: Cross multiply
    28,956.31x = 39,963.24 × 17,020.76
  4. Step 4: Simplify right side
    28,956.31x = 680,204,517.05
  5. Step 5: Solve for x
    x = 680,204,517.05/28,956.31
  6. Step 6: Final answer
    x = 23,490.72

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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.