Home / 20,998.59-28,976.99-11,565.33

Finding the Fourth Proportional to 20,998.59, 28,976.99 and 11,565.33

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Solution

The fourth proportional to 20,998.59, 28,976.99 and 11,565.33 is: 15,959.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.59 : 28,976.99 = 11,565.33 : x
  2. Step 2: Convert to fraction form
    20,998.59/28,976.99 = 11,565.33/x
  3. Step 3: Cross multiply
    20,998.59x = 28,976.99 × 11,565.33
  4. Step 4: Simplify right side
    20,998.59x = 335,128,393.93
  5. Step 5: Solve for x
    x = 335,128,393.93/20,998.59
  6. Step 6: Final answer
    x = 15,959.57

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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.