Home / 39,863.97-55,012.19-21,960.18

Finding the Fourth Proportional to 39,863.97, 55,012.19 and 21,960.18

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Solution

The fourth proportional to 39,863.97, 55,012.19 and 21,960.18 is: 30,305.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.97 : 55,012.19 = 21,960.18 : x
  2. Step 2: Convert to fraction form
    39,863.97/55,012.19 = 21,960.18/x
  3. Step 3: Cross multiply
    39,863.97x = 55,012.19 × 21,960.18
  4. Step 4: Simplify right side
    39,863.97x = 1,208,077,484.79
  5. Step 5: Solve for x
    x = 1,208,077,484.79/39,863.97
  6. Step 6: Final answer
    x = 30,305.00

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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.