Home / 28,092.78-38,767.98-15,517.50

Finding the Fourth Proportional to 28,092.78, 38,767.98 and 15,517.50

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Solution

The fourth proportional to 28,092.78, 38,767.98 and 15,517.50 is: 21,414.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,092.78 : 38,767.98 = 15,517.50 : x
  2. Step 2: Convert to fraction form
    28,092.78/38,767.98 = 15,517.50/x
  3. Step 3: Cross multiply
    28,092.78x = 38,767.98 × 15,517.50
  4. Step 4: Simplify right side
    28,092.78x = 601,582,129.65
  5. Step 5: Solve for x
    x = 601,582,129.65/28,092.78
  6. Step 6: Final answer
    x = 21,414.12

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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.