Home / 39,540.16-54,566.78-21,635.17

Finding the Fourth Proportional to 39,540.16, 54,566.78 and 21,635.17

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Solution

The fourth proportional to 39,540.16, 54,566.78 and 21,635.17 is: 29,857.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,540.16 : 54,566.78 = 21,635.17 : x
  2. Step 2: Convert to fraction form
    39,540.16/54,566.78 = 21,635.17/x
  3. Step 3: Cross multiply
    39,540.16x = 54,566.78 × 21,635.17
  4. Step 4: Simplify right side
    39,540.16x = 1,180,561,561.65
  5. Step 5: Solve for x
    x = 1,180,561,561.65/39,540.16
  6. Step 6: Final answer
    x = 29,857.28

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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.