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Finding the Fourth Proportional to 18,058.40, 27,034.80 and 12,874.40

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Solution

The fourth proportional to 18,058.40, 27,034.80 and 12,874.40 is: 19,273.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,058.40 : 27,034.80 = 12,874.40 : x
  2. Step 2: Convert to fraction form
    18,058.40/27,034.80 = 12,874.40/x
  3. Step 3: Cross multiply
    18,058.40x = 27,034.80 × 12,874.40
  4. Step 4: Simplify right side
    18,058.40x = 348,056,829.12
  5. Step 5: Solve for x
    x = 348,056,829.12/18,058.40
  6. Step 6: Final answer
    x = 19,273.96

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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.