Home / 18,899.10-28,327.82-7,799.72

Finding the Fourth Proportional to 18,899.10, 28,327.82 and 7,799.72

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Solution

The fourth proportional to 18,899.10, 28,327.82 and 7,799.72 is: 11,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.10 : 28,327.82 = 7,799.72 : x
  2. Step 2: Convert to fraction form
    18,899.10/28,327.82 = 7,799.72/x
  3. Step 3: Cross multiply
    18,899.10x = 28,327.82 × 7,799.72
  4. Step 4: Simplify right side
    18,899.10x = 220,948,883.57
  5. Step 5: Solve for x
    x = 220,948,883.57/18,899.10
  6. Step 6: Final answer
    x = 11,690.97

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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.