Home / 31,390.89-43,317.63-17,243.43

Finding the Fourth Proportional to 31,390.89, 43,317.63 and 17,243.43

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Solution

The fourth proportional to 31,390.89, 43,317.63 and 17,243.43 is: 23,794.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.89 : 43,317.63 = 17,243.43 : x
  2. Step 2: Convert to fraction form
    31,390.89/43,317.63 = 17,243.43/x
  3. Step 3: Cross multiply
    31,390.89x = 43,317.63 × 17,243.43
  4. Step 4: Simplify right side
    31,390.89x = 746,944,520.67
  5. Step 5: Solve for x
    x = 746,944,520.67/31,390.89
  6. Step 6: Final answer
    x = 23,794.95

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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.