Home / 39,863.52-55,013.04-21,959.28

Finding the Fourth Proportional to 39,863.52, 55,013.04 and 21,959.28

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Solution

The fourth proportional to 39,863.52, 55,013.04 and 21,959.28 is: 30,304.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.52 : 55,013.04 = 21,959.28 : x
  2. Step 2: Convert to fraction form
    39,863.52/55,013.04 = 21,959.28/x
  3. Step 3: Cross multiply
    39,863.52x = 55,013.04 × 21,959.28
  4. Step 4: Simplify right side
    39,863.52x = 1,208,046,749.01
  5. Step 5: Solve for x
    x = 1,208,046,749.01/39,863.52
  6. Step 6: Final answer
    x = 30,304.57

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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.