Home / 20,854.44-28,779.12-11,423.34

Finding the Fourth Proportional to 20,854.44, 28,779.12 and 11,423.34

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Solution

The fourth proportional to 20,854.44, 28,779.12 and 11,423.34 is: 15,764.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.44 : 28,779.12 = 11,423.34 : x
  2. Step 2: Convert to fraction form
    20,854.44/28,779.12 = 11,423.34/x
  3. Step 3: Cross multiply
    20,854.44x = 28,779.12 × 11,423.34
  4. Step 4: Simplify right side
    20,854.44x = 328,753,672.66
  5. Step 5: Solve for x
    x = 328,753,672.66/20,854.44
  6. Step 6: Final answer
    x = 15,764.21

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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.