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Finding the Fourth Proportional to 18,040.88, 27,060.78 and 8,172.92

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Solution

The fourth proportional to 18,040.88, 27,060.78 and 8,172.92 is: 12,259.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,040.88 : 27,060.78 = 8,172.92 : x
  2. Step 2: Convert to fraction form
    18,040.88/27,060.78 = 8,172.92/x
  3. Step 3: Cross multiply
    18,040.88x = 27,060.78 × 8,172.92
  4. Step 4: Simplify right side
    18,040.88x = 221,165,590.08
  5. Step 5: Solve for x
    x = 221,165,590.08/18,040.88
  6. Step 6: Final answer
    x = 12,259.14

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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.