Home / 20,449.22-28,219.52-11,374.39

Finding the Fourth Proportional to 20,449.22, 28,219.52 and 11,374.39

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Solution

The fourth proportional to 20,449.22, 28,219.52 and 11,374.39 is: 15,696.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.22 : 28,219.52 = 11,374.39 : x
  2. Step 2: Convert to fraction form
    20,449.22/28,219.52 = 11,374.39/x
  3. Step 3: Cross multiply
    20,449.22x = 28,219.52 × 11,374.39
  4. Step 4: Simplify right side
    20,449.22x = 320,979,826.09
  5. Step 5: Solve for x
    x = 320,979,826.09/20,449.22
  6. Step 6: Final answer
    x = 15,696.43

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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.