Home / 18,779.22-25,919.96-11,230.02

Finding the Fourth Proportional to 18,779.22, 25,919.96 and 11,230.02

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Solution

The fourth proportional to 18,779.22, 25,919.96 and 11,230.02 is: 15,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.22 : 25,919.96 = 11,230.02 : x
  2. Step 2: Convert to fraction form
    18,779.22/25,919.96 = 11,230.02/x
  3. Step 3: Cross multiply
    18,779.22x = 25,919.96 × 11,230.02
  4. Step 4: Simplify right side
    18,779.22x = 291,081,613.05
  5. Step 5: Solve for x
    x = 291,081,613.05/18,779.22
  6. Step 6: Final answer
    x = 15,500.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.