Home / 31,761.78-43,830.54-18,150.44

Finding the Fourth Proportional to 31,761.78, 43,830.54 and 18,150.44

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Solution

The fourth proportional to 31,761.78, 43,830.54 and 18,150.44 is: 25,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,761.78 : 43,830.54 = 18,150.44 : x
  2. Step 2: Convert to fraction form
    31,761.78/43,830.54 = 18,150.44/x
  3. Step 3: Cross multiply
    31,761.78x = 43,830.54 × 18,150.44
  4. Step 4: Simplify right side
    31,761.78x = 795,543,586.44
  5. Step 5: Solve for x
    x = 795,543,586.44/31,761.78
  6. Step 6: Final answer
    x = 25,047.20

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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.