Home / 20,110.20-27,779.13-15,452.70

Finding the Fourth Proportional to 20,110.20, 27,779.13 and 15,452.70

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Solution

The fourth proportional to 20,110.20, 27,779.13 and 15,452.70 is: 21,345.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.20 : 27,779.13 = 15,452.70 : x
  2. Step 2: Convert to fraction form
    20,110.20/27,779.13 = 15,452.70/x
  3. Step 3: Cross multiply
    20,110.20x = 27,779.13 × 15,452.70
  4. Step 4: Simplify right side
    20,110.20x = 429,262,562.15
  5. Step 5: Solve for x
    x = 429,262,562.15/20,110.20
  6. Step 6: Final answer
    x = 21,345.51

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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.