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Finding the Fourth Proportional to 18,488.89, 27,733.49 and 7,958.18

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Solution

The fourth proportional to 18,488.89, 27,733.49 and 7,958.18 is: 11,937.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.89 : 27,733.49 = 7,958.18 : x
  2. Step 2: Convert to fraction form
    18,488.89/27,733.49 = 7,958.18/x
  3. Step 3: Cross multiply
    18,488.89x = 27,733.49 × 7,958.18
  4. Step 4: Simplify right side
    18,488.89x = 220,708,164.83
  5. Step 5: Solve for x
    x = 220,708,164.83/18,488.89
  6. Step 6: Final answer
    x = 11,937.34

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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.