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Finding the Fourth Proportional to 25,540.31, 38,310.47 and 7,072.31

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Solution

The fourth proportional to 25,540.31, 38,310.47 and 7,072.31 is: 10,608.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,540.31 : 38,310.47 = 7,072.31 : x
  2. Step 2: Convert to fraction form
    25,540.31/38,310.47 = 7,072.31/x
  3. Step 3: Cross multiply
    25,540.31x = 38,310.47 × 7,072.31
  4. Step 4: Simplify right side
    25,540.31x = 270,943,607.02
  5. Step 5: Solve for x
    x = 270,943,607.02/25,540.31
  6. Step 6: Final answer
    x = 10,608.47

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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.