Home / 31,755.38-43,820.30-18,327.20

Finding the Fourth Proportional to 31,755.38, 43,820.30 and 18,327.20

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Solution

The fourth proportional to 31,755.38, 43,820.30 and 18,327.20 is: 25,290.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,755.38 : 43,820.30 = 18,327.20 : x
  2. Step 2: Convert to fraction form
    31,755.38/43,820.30 = 18,327.20/x
  3. Step 3: Cross multiply
    31,755.38x = 43,820.30 × 18,327.20
  4. Step 4: Simplify right side
    31,755.38x = 803,103,402.16
  5. Step 5: Solve for x
    x = 803,103,402.16/31,755.38
  6. Step 6: Final answer
    x = 25,290.31

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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.