Home / 39,708.74-54,799.00-21,805.04

Finding the Fourth Proportional to 39,708.74, 54,799.00 and 21,805.04

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Solution

The fourth proportional to 39,708.74, 54,799.00 and 21,805.04 is: 30,091.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708.74 : 54,799.00 = 21,805.04 : x
  2. Step 2: Convert to fraction form
    39,708.74/54,799.00 = 21,805.04/x
  3. Step 3: Cross multiply
    39,708.74x = 54,799.00 × 21,805.04
  4. Step 4: Simplify right side
    39,708.74x = 1,194,894,469.44
  5. Step 5: Solve for x
    x = 1,194,894,469.44/39,708.74
  6. Step 6: Final answer
    x = 30,091.47

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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.