Home / 31,189.86-43,042.59-17,043.21

Finding the Fourth Proportional to 31,189.86, 43,042.59 and 17,043.21

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Solution

The fourth proportional to 31,189.86, 43,042.59 and 17,043.21 is: 23,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,189.86 : 43,042.59 = 17,043.21 : x
  2. Step 2: Convert to fraction form
    31,189.86/43,042.59 = 17,043.21/x
  3. Step 3: Cross multiply
    31,189.86x = 43,042.59 × 17,043.21
  4. Step 4: Simplify right side
    31,189.86x = 733,583,900.31
  5. Step 5: Solve for x
    x = 733,583,900.31/31,189.86
  6. Step 6: Final answer
    x = 23,519.95

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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.