Home / 20,540.26-28,345.29-11,590.66

Finding the Fourth Proportional to 20,540.26, 28,345.29 and 11,590.66

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Solution

The fourth proportional to 20,540.26, 28,345.29 and 11,590.66 is: 15,994.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.26 : 28,345.29 = 11,590.66 : x
  2. Step 2: Convert to fraction form
    20,540.26/28,345.29 = 11,590.66/x
  3. Step 3: Cross multiply
    20,540.26x = 28,345.29 × 11,590.66
  4. Step 4: Simplify right side
    20,540.26x = 328,540,618.99
  5. Step 5: Solve for x
    x = 328,540,618.99/20,540.26
  6. Step 6: Final answer
    x = 15,994.96

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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.