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Finding the Fourth Proportional to 18,135.90, 27,192.92 and 8,283.47

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Solution

The fourth proportional to 18,135.90, 27,192.92 and 8,283.47 is: 12,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.90 : 27,192.92 = 8,283.47 : x
  2. Step 2: Convert to fraction form
    18,135.90/27,192.92 = 8,283.47/x
  3. Step 3: Cross multiply
    18,135.90x = 27,192.92 × 8,283.47
  4. Step 4: Simplify right side
    18,135.90x = 225,251,559.65
  5. Step 5: Solve for x
    x = 225,251,559.65/18,135.90
  6. Step 6: Final answer
    x = 12,420.20

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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.