Home / 31,728.02-43,789.27-18,296.60

Finding the Fourth Proportional to 31,728.02, 43,789.27 and 18,296.60

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Solution

The fourth proportional to 31,728.02, 43,789.27 and 18,296.60 is: 25,251.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.02 : 43,789.27 = 18,296.60 : x
  2. Step 2: Convert to fraction form
    31,728.02/43,789.27 = 18,296.60/x
  3. Step 3: Cross multiply
    31,728.02x = 43,789.27 × 18,296.60
  4. Step 4: Simplify right side
    31,728.02x = 801,194,821.21
  5. Step 5: Solve for x
    x = 801,194,821.21/31,728.02
  6. Step 6: Final answer
    x = 25,251.96

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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.