Home / 28,147.05-38,841.17-15,571.80

Finding the Fourth Proportional to 28,147.05, 38,841.17 and 15,571.80

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Solution

The fourth proportional to 28,147.05, 38,841.17 and 15,571.80 is: 21,488.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.05 : 38,841.17 = 15,571.80 : x
  2. Step 2: Convert to fraction form
    28,147.05/38,841.17 = 15,571.80/x
  3. Step 3: Cross multiply
    28,147.05x = 38,841.17 × 15,571.80
  4. Step 4: Simplify right side
    28,147.05x = 604,826,775.73
  5. Step 5: Solve for x
    x = 604,826,775.73/28,147.05
  6. Step 6: Final answer
    x = 21,488.11

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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.