Home / 39,716.75-54,809.50-21,812.13

Finding the Fourth Proportional to 39,716.75, 54,809.50 and 21,812.13

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Solution

The fourth proportional to 39,716.75, 54,809.50 and 21,812.13 is: 30,100.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.75 : 54,809.50 = 21,812.13 : x
  2. Step 2: Convert to fraction form
    39,716.75/54,809.50 = 21,812.13/x
  3. Step 3: Cross multiply
    39,716.75x = 54,809.50 × 21,812.13
  4. Step 4: Simplify right side
    39,716.75x = 1,195,511,939.24
  5. Step 5: Solve for x
    x = 1,195,511,939.24/39,716.75
  6. Step 6: Final answer
    x = 30,100.95

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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.