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Finding the Fourth Proportional to 18,139.18, 27,205.69 and 8,276.14

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Solution

The fourth proportional to 18,139.18, 27,205.69 and 8,276.14 is: 12,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.18 : 27,205.69 = 8,276.14 : x
  2. Step 2: Convert to fraction form
    18,139.18/27,205.69 = 8,276.14/x
  3. Step 3: Cross multiply
    18,139.18x = 27,205.69 × 8,276.14
  4. Step 4: Simplify right side
    18,139.18x = 225,158,099.24
  5. Step 5: Solve for x
    x = 225,158,099.24/18,139.18
  6. Step 6: Final answer
    x = 12,412.80

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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.