Home / 20,540.88-28,346.42-11,590.28

Finding the Fourth Proportional to 20,540.88, 28,346.42 and 11,590.28

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Solution

The fourth proportional to 20,540.88, 28,346.42 and 11,590.28 is: 15,994.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.88 : 28,346.42 = 11,590.28 : x
  2. Step 2: Convert to fraction form
    20,540.88/28,346.42 = 11,590.28/x
  3. Step 3: Cross multiply
    20,540.88x = 28,346.42 × 11,590.28
  4. Step 4: Simplify right side
    20,540.88x = 328,542,944.80
  5. Step 5: Solve for x
    x = 328,542,944.80/20,540.88
  6. Step 6: Final answer
    x = 15,994.59

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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.