Home / 39,891.26-55,049.67-21,986.28

Finding the Fourth Proportional to 39,891.26, 55,049.67 and 21,986.28

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Solution

The fourth proportional to 39,891.26, 55,049.67 and 21,986.28 is: 30,340.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,891.26 : 55,049.67 = 21,986.28 : x
  2. Step 2: Convert to fraction form
    39,891.26/55,049.67 = 21,986.28/x
  3. Step 3: Cross multiply
    39,891.26x = 55,049.67 × 21,986.28
  4. Step 4: Simplify right side
    39,891.26x = 1,210,337,458.53
  5. Step 5: Solve for x
    x = 1,210,337,458.53/39,891.26
  6. Step 6: Final answer
    x = 30,340.92

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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.