Home / 28,290.92-38,951.97-21,554.96

Finding the Fourth Proportional to 28,290.92, 38,951.97 and 21,554.96

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Solution

The fourth proportional to 28,290.92, 38,951.97 and 21,554.96 is: 29,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.92 : 38,951.97 = 21,554.96 : x
  2. Step 2: Convert to fraction form
    28,290.92/38,951.97 = 21,554.96/x
  3. Step 3: Cross multiply
    28,290.92x = 38,951.97 × 21,554.96
  4. Step 4: Simplify right side
    28,290.92x = 839,608,155.27
  5. Step 5: Solve for x
    x = 839,608,155.27/28,290.92
  6. Step 6: Final answer
    x = 29,677.65

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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.