Home / 39,966.33-55,153.26-21,816.99

Finding the Fourth Proportional to 39,966.33, 55,153.26 and 21,816.99

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Solution

The fourth proportional to 39,966.33, 55,153.26 and 21,816.99 is: 30,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,966.33 : 55,153.26 = 21,816.99 : x
  2. Step 2: Convert to fraction form
    39,966.33/55,153.26 = 21,816.99/x
  3. Step 3: Cross multiply
    39,966.33x = 55,153.26 × 21,816.99
  4. Step 4: Simplify right side
    39,966.33x = 1,203,278,121.89
  5. Step 5: Solve for x
    x = 1,203,278,121.89/39,966.33
  6. Step 6: Final answer
    x = 30,107.30

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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.