Home / 28,377.56-39,160.68-15,630.44

Finding the Fourth Proportional to 28,377.56, 39,160.68 and 15,630.44

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Solution

The fourth proportional to 28,377.56, 39,160.68 and 15,630.44 is: 21,569.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.56 : 39,160.68 = 15,630.44 : x
  2. Step 2: Convert to fraction form
    28,377.56/39,160.68 = 15,630.44/x
  3. Step 3: Cross multiply
    28,377.56x = 39,160.68 × 15,630.44
  4. Step 4: Simplify right side
    28,377.56x = 612,098,659.10
  5. Step 5: Solve for x
    x = 612,098,659.10/28,377.56
  6. Step 6: Final answer
    x = 21,569.81

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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.