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Finding the Third Proportional to 15,331.78 and 16,341.75

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Solution

The third proportional to 15,331.78 and 16,341.75 is: 17,418.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.78 : 16,341.75 = 16,341.75 : x
  2. Step 2: Convert to fraction form
    15,331.78/16,341.75 = 16,341.75/x
  3. Step 3: Cross multiply
    15,331.78x = 16,341.75 × 16,341.75
  4. Step 4: Simplify right side
    15,331.78x = 267,052,793.06
  5. Step 5: Solve for x
    x = 267,052,793.06/15,331.78
  6. Step 6: Final answer
    x = 17,418.25

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.