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Finding the Fourth Proportional to 18,325, 25,278.42 and 13,027.72

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Solution

The fourth proportional to 18,325, 25,278.42 and 13,027.72 is: 17,971.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,325 : 25,278.42 = 13,027.72 : x
  2. Step 2: Convert to fraction form
    18,325/25,278.42 = 13,027.72/x
  3. Step 3: Cross multiply
    18,325x = 25,278.42 × 13,027.72
  4. Step 4: Simplify right side
    18,325x = 329,320,177.80
  5. Step 5: Solve for x
    x = 329,320,177.80/18,325
  6. Step 6: Final answer
    x = 17,971.09

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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.