Home / 31,266.76-43,147.38-17,120.20

Finding the Fourth Proportional to 31,266.76, 43,147.38 and 17,120.20

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Solution

The fourth proportional to 31,266.76, 43,147.38 and 17,120.20 is: 23,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,266.76 : 43,147.38 = 17,120.20 : x
  2. Step 2: Convert to fraction form
    31,266.76/43,147.38 = 17,120.20/x
  3. Step 3: Cross multiply
    31,266.76x = 43,147.38 × 17,120.20
  4. Step 4: Simplify right side
    31,266.76x = 738,691,775.08
  5. Step 5: Solve for x
    x = 738,691,775.08/31,266.76
  6. Step 6: Final answer
    x = 23,625.47

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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.