Home / 39,868.94-55,019.12-21,963.96

Finding the Fourth Proportional to 39,868.94, 55,019.12 and 21,963.96

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Solution

The fourth proportional to 39,868.94, 55,019.12 and 21,963.96 is: 30,310.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868.94 : 55,019.12 = 21,963.96 : x
  2. Step 2: Convert to fraction form
    39,868.94/55,019.12 = 21,963.96/x
  3. Step 3: Cross multiply
    39,868.94x = 55,019.12 × 21,963.96
  4. Step 4: Simplify right side
    39,868.94x = 1,208,437,641.10
  5. Step 5: Solve for x
    x = 1,208,437,641.10/39,868.94
  6. Step 6: Final answer
    x = 30,310.25

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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.