Home / 28,261.85-42,409.17-15,121.62

Finding the Fourth Proportional to 28,261.85, 42,409.17 and 15,121.62

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Solution

The fourth proportional to 28,261.85, 42,409.17 and 15,121.62 is: 22,691.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.85 : 42,409.17 = 15,121.62 : x
  2. Step 2: Convert to fraction form
    28,261.85/42,409.17 = 15,121.62/x
  3. Step 3: Cross multiply
    28,261.85x = 42,409.17 × 15,121.62
  4. Step 4: Simplify right side
    28,261.85x = 641,295,353.26
  5. Step 5: Solve for x
    x = 641,295,353.26/28,261.85
  6. Step 6: Final answer
    x = 22,691.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.