Home / 18,744.62-28,122.89-11,729.10

Finding the Fourth Proportional to 18,744.62, 28,122.89 and 11,729.10

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Solution

The fourth proportional to 18,744.62, 28,122.89 and 11,729.10 is: 17,597.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.62 : 28,122.89 = 11,729.10 : x
  2. Step 2: Convert to fraction form
    18,744.62/28,122.89 = 11,729.10/x
  3. Step 3: Cross multiply
    18,744.62x = 28,122.89 × 11,729.10
  4. Step 4: Simplify right side
    18,744.62x = 329,856,189.10
  5. Step 5: Solve for x
    x = 329,856,189.10/18,744.62
  6. Step 6: Final answer
    x = 17,597.38

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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.