Home / 31,386.24-43,310.88-17,239.68

Finding the Fourth Proportional to 31,386.24, 43,310.88 and 17,239.68

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Solution

The fourth proportional to 31,386.24, 43,310.88 and 17,239.68 is: 23,789.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.24 : 43,310.88 = 17,239.68 : x
  2. Step 2: Convert to fraction form
    31,386.24/43,310.88 = 17,239.68/x
  3. Step 3: Cross multiply
    31,386.24x = 43,310.88 × 17,239.68
  4. Step 4: Simplify right side
    31,386.24x = 746,665,711.72
  5. Step 5: Solve for x
    x = 746,665,711.72/31,386.24
  6. Step 6: Final answer
    x = 23,789.59

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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.