Home / 18,418.60-27,614.40-7,319.80

Finding the Fourth Proportional to 18,418.60, 27,614.40 and 7,319.80

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Solution

The fourth proportional to 18,418.60, 27,614.40 and 7,319.80 is: 10,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.60 : 27,614.40 = 7,319.80 : x
  2. Step 2: Convert to fraction form
    18,418.60/27,614.40 = 7,319.80/x
  3. Step 3: Cross multiply
    18,418.60x = 27,614.40 × 7,319.80
  4. Step 4: Simplify right side
    18,418.60x = 202,131,885.12
  5. Step 5: Solve for x
    x = 202,131,885.12/18,418.60
  6. Step 6: Final answer
    x = 10,974.33

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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.