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Finding the Fourth Proportional to 18,276.20, 27,443.10 and 10,500.20

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Solution

The fourth proportional to 18,276.20, 27,443.10 and 10,500.20 is: 15,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276.20 : 27,443.10 = 10,500.20 : x
  2. Step 2: Convert to fraction form
    18,276.20/27,443.10 = 10,500.20/x
  3. Step 3: Cross multiply
    18,276.20x = 27,443.10 × 10,500.20
  4. Step 4: Simplify right side
    18,276.20x = 288,158,038.62
  5. Step 5: Solve for x
    x = 288,158,038.62/18,276.20
  6. Step 6: Final answer
    x = 15,766.85

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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.