Home / 28,247.52-38,982.42-15,672

Finding the Fourth Proportional to 28,247.52, 38,982.42 and 15,672

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Solution

The fourth proportional to 28,247.52, 38,982.42 and 15,672 is: 21,627.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.52 : 38,982.42 = 15,672 : x
  2. Step 2: Convert to fraction form
    28,247.52/38,982.42 = 15,672/x
  3. Step 3: Cross multiply
    28,247.52x = 38,982.42 × 15,672
  4. Step 4: Simplify right side
    28,247.52x = 610,932,486.24
  5. Step 5: Solve for x
    x = 610,932,486.24/28,247.52
  6. Step 6: Final answer
    x = 21,627.83

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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.