Home / 20,539.38-28,347.26-11,587.71

Finding the Fourth Proportional to 20,539.38, 28,347.26 and 11,587.71

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Solution

The fourth proportional to 20,539.38, 28,347.26 and 11,587.71 is: 15,992.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.38 : 28,347.26 = 11,587.71 : x
  2. Step 2: Convert to fraction form
    20,539.38/28,347.26 = 11,587.71/x
  3. Step 3: Cross multiply
    20,539.38x = 28,347.26 × 11,587.71
  4. Step 4: Simplify right side
    20,539.38x = 328,479,770.24
  5. Step 5: Solve for x
    x = 328,479,770.24/20,539.38
  6. Step 6: Final answer
    x = 15,992.68

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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.