Home / 20,514.18-28,308.66-11,561.64

Finding the Fourth Proportional to 20,514.18, 28,308.66 and 11,561.64

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Solution

The fourth proportional to 20,514.18, 28,308.66 and 11,561.64 is: 15,954.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.18 : 28,308.66 = 11,561.64 : x
  2. Step 2: Convert to fraction form
    20,514.18/28,308.66 = 11,561.64/x
  3. Step 3: Cross multiply
    20,514.18x = 28,308.66 × 11,561.64
  4. Step 4: Simplify right side
    20,514.18x = 327,294,535.80
  5. Step 5: Solve for x
    x = 327,294,535.80/20,514.18
  6. Step 6: Final answer
    x = 15,954.55

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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.