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Finding the Fourth Proportional to 18,459.38, 27,679.34 and 8,058.98

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Solution

The fourth proportional to 18,459.38, 27,679.34 and 8,058.98 is: 12,084.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,459.38 : 27,679.34 = 8,058.98 : x
  2. Step 2: Convert to fraction form
    18,459.38/27,679.34 = 8,058.98/x
  3. Step 3: Cross multiply
    18,459.38x = 27,679.34 × 8,058.98
  4. Step 4: Simplify right side
    18,459.38x = 223,067,247.47
  5. Step 5: Solve for x
    x = 223,067,247.47/18,459.38
  6. Step 6: Final answer
    x = 12,084.22

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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.