Home / 38,638.14-57,986.40-28,276.62

Finding the Fourth Proportional to 38,638.14, 57,986.40 and 28,276.62

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Solution

The fourth proportional to 38,638.14, 57,986.40 and 28,276.62 is: 42,436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,638.14 : 57,986.40 = 28,276.62 : x
  2. Step 2: Convert to fraction form
    38,638.14/57,986.40 = 28,276.62/x
  3. Step 3: Cross multiply
    38,638.14x = 57,986.40 × 28,276.62
  4. Step 4: Simplify right side
    38,638.14x = 1,639,659,397.97
  5. Step 5: Solve for x
    x = 1,639,659,397.97/38,638.14
  6. Step 6: Final answer
    x = 42,436.29

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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.