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Finding the Fourth Proportional to 18,058.78, 24,921.12 and 11,771.16

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Solution

The fourth proportional to 18,058.78, 24,921.12 and 11,771.16 is: 16,244.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,058.78 : 24,921.12 = 11,771.16 : x
  2. Step 2: Convert to fraction form
    18,058.78/24,921.12 = 11,771.16/x
  3. Step 3: Cross multiply
    18,058.78x = 24,921.12 × 11,771.16
  4. Step 4: Simplify right side
    18,058.78x = 293,350,375.37
  5. Step 5: Solve for x
    x = 293,350,375.37/18,058.78
  6. Step 6: Final answer
    x = 16,244.20

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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.