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Finding the Fourth Proportional to 18,039.78, 27,022.91 and 8,651.18

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Solution

The fourth proportional to 18,039.78, 27,022.91 and 8,651.18 is: 12,959.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,039.78 : 27,022.91 = 8,651.18 : x
  2. Step 2: Convert to fraction form
    18,039.78/27,022.91 = 8,651.18/x
  3. Step 3: Cross multiply
    18,039.78x = 27,022.91 × 8,651.18
  4. Step 4: Simplify right side
    18,039.78x = 233,780,082.84
  5. Step 5: Solve for x
    x = 233,780,082.84/18,039.78
  6. Step 6: Final answer
    x = 12,959.14

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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.