Home / 39,864.30-55,013.10-21,959.94

Finding the Fourth Proportional to 39,864.30, 55,013.10 and 21,959.94

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Solution

The fourth proportional to 39,864.30, 55,013.10 and 21,959.94 is: 30,304.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,864.30 : 55,013.10 = 21,959.94 : x
  2. Step 2: Convert to fraction form
    39,864.30/55,013.10 = 21,959.94/x
  3. Step 3: Cross multiply
    39,864.30x = 55,013.10 × 21,959.94
  4. Step 4: Simplify right side
    39,864.30x = 1,208,084,375.21
  5. Step 5: Solve for x
    x = 1,208,084,375.21/39,864.30
  6. Step 6: Final answer
    x = 30,304.92

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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.