Home / 39,868.57-55,016.58-21,963.18

Finding the Fourth Proportional to 39,868.57, 55,016.58 and 21,963.18

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Solution

The fourth proportional to 39,868.57, 55,016.58 and 21,963.18 is: 30,308.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868.57 : 55,016.58 = 21,963.18 : x
  2. Step 2: Convert to fraction form
    39,868.57/55,016.58 = 21,963.18/x
  3. Step 3: Cross multiply
    39,868.57x = 55,016.58 × 21,963.18
  4. Step 4: Simplify right side
    39,868.57x = 1,208,339,338.20
  5. Step 5: Solve for x
    x = 1,208,339,338.20/39,868.57
  6. Step 6: Final answer
    x = 30,308.07

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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.