Home / 31,758.78-43,826.40-18,147.44

Finding the Fourth Proportional to 31,758.78, 43,826.40 and 18,147.44

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Solution

The fourth proportional to 31,758.78, 43,826.40 and 18,147.44 is: 25,043.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,758.78 : 43,826.40 = 18,147.44 : x
  2. Step 2: Convert to fraction form
    31,758.78/43,826.40 = 18,147.44/x
  3. Step 3: Cross multiply
    31,758.78x = 43,826.40 × 18,147.44
  4. Step 4: Simplify right side
    31,758.78x = 795,337,073.98
  5. Step 5: Solve for x
    x = 795,337,073.98/31,758.78
  6. Step 6: Final answer
    x = 25,043.06

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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.