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Finding the Fourth Proportional to 18,385.48, 27,582.54 and 8,000.20

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Solution

The fourth proportional to 18,385.48, 27,582.54 and 8,000.20 is: 12,002.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.48 : 27,582.54 = 8,000.20 : x
  2. Step 2: Convert to fraction form
    18,385.48/27,582.54 = 8,000.20/x
  3. Step 3: Cross multiply
    18,385.48x = 27,582.54 × 8,000.20
  4. Step 4: Simplify right side
    18,385.48x = 220,665,836.51
  5. Step 5: Solve for x
    x = 220,665,836.51/18,385.48
  6. Step 6: Final answer
    x = 12,002.18

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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.