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Finding the Fourth Proportional to 28,951.92, 39,948.46 and 17,017.66

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Solution

The fourth proportional to 28,951.92, 39,948.46 and 17,017.66 is: 23,481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,951.92 : 39,948.46 = 17,017.66 : x
  2. Step 2: Convert to fraction form
    28,951.92/39,948.46 = 17,017.66/x
  3. Step 3: Cross multiply
    28,951.92x = 39,948.46 × 17,017.66
  4. Step 4: Simplify right side
    28,951.92x = 679,829,309.80
  5. Step 5: Solve for x
    x = 679,829,309.80/28,951.92
  6. Step 6: Final answer
    x = 23,481.32

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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.