Home / 39,868.83-55,019.01-21,963.84

Finding the Fourth Proportional to 39,868.83, 55,019.01 and 21,963.84

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Solution

The fourth proportional to 39,868.83, 55,019.01 and 21,963.84 is: 30,310.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868.83 : 55,019.01 = 21,963.84 : x
  2. Step 2: Convert to fraction form
    39,868.83/55,019.01 = 21,963.84/x
  3. Step 3: Cross multiply
    39,868.83x = 55,019.01 × 21,963.84
  4. Step 4: Simplify right side
    39,868.83x = 1,208,428,732.60
  5. Step 5: Solve for x
    x = 1,208,428,732.60/39,868.83
  6. Step 6: Final answer
    x = 30,310.11

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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.