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Finding the Fourth Proportional to 18,439.82, 27,651.08 and 6,744.86

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Solution

The fourth proportional to 18,439.82, 27,651.08 and 6,744.86 is: 10,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.82 : 27,651.08 = 6,744.86 : x
  2. Step 2: Convert to fraction form
    18,439.82/27,651.08 = 6,744.86/x
  3. Step 3: Cross multiply
    18,439.82x = 27,651.08 × 6,744.86
  4. Step 4: Simplify right side
    18,439.82x = 186,502,663.45
  5. Step 5: Solve for x
    x = 186,502,663.45/18,439.82
  6. Step 6: Final answer
    x = 10,114.13

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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.