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Finding the Fourth Proportional to 18,102.91, 27,146.66 and 8,248.45

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Solution

The fourth proportional to 18,102.91, 27,146.66 and 8,248.45 is: 12,369.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,102.91 : 27,146.66 = 8,248.45 : x
  2. Step 2: Convert to fraction form
    18,102.91/27,146.66 = 8,248.45/x
  3. Step 3: Cross multiply
    18,102.91x = 27,146.66 × 8,248.45
  4. Step 4: Simplify right side
    18,102.91x = 223,917,690.70
  5. Step 5: Solve for x
    x = 223,917,690.70/18,102.91
  6. Step 6: Final answer
    x = 12,369.16

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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.