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Finding the Fourth Proportional to 18,104.81, 27,100.40 and 12,449.48

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Solution

The fourth proportional to 18,104.81, 27,100.40 and 12,449.48 is: 18,635.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,104.81 : 27,100.40 = 12,449.48 : x
  2. Step 2: Convert to fraction form
    18,104.81/27,100.40 = 12,449.48/x
  3. Step 3: Cross multiply
    18,104.81x = 27,100.40 × 12,449.48
  4. Step 4: Simplify right side
    18,104.81x = 337,385,690.04
  5. Step 5: Solve for x
    x = 337,385,690.04/18,104.81
  6. Step 6: Final answer
    x = 18,635.15

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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.