Home / 20,311.67-27,967.79-17,779.61

Finding the Fourth Proportional to 20,311.67, 27,967.79 and 17,779.61

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Solution

The fourth proportional to 20,311.67, 27,967.79 and 17,779.61 is: 24,481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.67 : 27,967.79 = 17,779.61 : x
  2. Step 2: Convert to fraction form
    20,311.67/27,967.79 = 17,779.61/x
  3. Step 3: Cross multiply
    20,311.67x = 27,967.79 × 17,779.61
  4. Step 4: Simplify right side
    20,311.67x = 497,256,398.76
  5. Step 5: Solve for x
    x = 497,256,398.76/20,311.67
  6. Step 6: Final answer
    x = 24,481.32

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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.