Home / 20,540.24-28,346.84-11,584.47

Finding the Fourth Proportional to 20,540.24, 28,346.84 and 11,584.47

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Solution

The fourth proportional to 20,540.24, 28,346.84 and 11,584.47 is: 15,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.24 : 28,346.84 = 11,584.47 : x
  2. Step 2: Convert to fraction form
    20,540.24/28,346.84 = 11,584.47/x
  3. Step 3: Cross multiply
    20,540.24x = 28,346.84 × 11,584.47
  4. Step 4: Simplify right side
    20,540.24x = 328,383,117.57
  5. Step 5: Solve for x
    x = 328,383,117.57/20,540.24
  6. Step 6: Final answer
    x = 15,987.31

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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.