Home / 39,868.30-55,020.75-21,963.31

Finding the Fourth Proportional to 39,868.30, 55,020.75 and 21,963.31

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Solution

The fourth proportional to 39,868.30, 55,020.75 and 21,963.31 is: 30,310.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868.30 : 55,020.75 = 21,963.31 : x
  2. Step 2: Convert to fraction form
    39,868.30/55,020.75 = 21,963.31/x
  3. Step 3: Cross multiply
    39,868.30x = 55,020.75 × 21,963.31
  4. Step 4: Simplify right side
    39,868.30x = 1,208,437,788.68
  5. Step 5: Solve for x
    x = 1,208,437,788.68/39,868.30
  6. Step 6: Final answer
    x = 30,310.74

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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.