Home / 31,727.76-43,765.56-18,979.44

Finding the Fourth Proportional to 31,727.76, 43,765.56 and 18,979.44

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Solution

The fourth proportional to 31,727.76, 43,765.56 and 18,979.44 is: 26,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,727.76 : 43,765.56 = 18,979.44 : x
  2. Step 2: Convert to fraction form
    31,727.76/43,765.56 = 18,979.44/x
  3. Step 3: Cross multiply
    31,727.76x = 43,765.56 × 18,979.44
  4. Step 4: Simplify right side
    31,727.76x = 830,645,820.09
  5. Step 5: Solve for x
    x = 830,645,820.09/31,727.76
  6. Step 6: Final answer
    x = 26,180.41

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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.