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Finding the Fourth Proportional to 18,363.78, 27,530.31 and 8,510.13

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Solution

The fourth proportional to 18,363.78, 27,530.31 and 8,510.13 is: 12,758.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.78 : 27,530.31 = 8,510.13 : x
  2. Step 2: Convert to fraction form
    18,363.78/27,530.31 = 8,510.13/x
  3. Step 3: Cross multiply
    18,363.78x = 27,530.31 × 8,510.13
  4. Step 4: Simplify right side
    18,363.78x = 234,286,517.04
  5. Step 5: Solve for x
    x = 234,286,517.04/18,363.78
  6. Step 6: Final answer
    x = 12,758.08

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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.