Home / 31,724.98-43,798.17-21,668.50

Finding the Fourth Proportional to 31,724.98, 43,798.17 and 21,668.50

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Solution

The fourth proportional to 31,724.98, 43,798.17 and 21,668.50 is: 29,914.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,724.98 : 43,798.17 = 21,668.50 : x
  2. Step 2: Convert to fraction form
    31,724.98/43,798.17 = 21,668.50/x
  3. Step 3: Cross multiply
    31,724.98x = 43,798.17 × 21,668.50
  4. Step 4: Simplify right side
    31,724.98x = 949,040,646.65
  5. Step 5: Solve for x
    x = 949,040,646.65/31,724.98
  6. Step 6: Final answer
    x = 29,914.62

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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.