Home / 28,377.38-39,161.05-15,630.85

Finding the Fourth Proportional to 28,377.38, 39,161.05 and 15,630.85

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Solution

The fourth proportional to 28,377.38, 39,161.05 and 15,630.85 is: 21,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.38 : 39,161.05 = 15,630.85 : x
  2. Step 2: Convert to fraction form
    28,377.38/39,161.05 = 15,630.85/x
  3. Step 3: Cross multiply
    28,377.38x = 39,161.05 × 15,630.85
  4. Step 4: Simplify right side
    28,377.38x = 612,120,302.59
  5. Step 5: Solve for x
    x = 612,120,302.59/28,377.38
  6. Step 6: Final answer
    x = 21,570.72

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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.