Home / 39,711.78-54,802.26-21,806.79

Finding the Fourth Proportional to 39,711.78, 54,802.26 and 21,806.79

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Solution

The fourth proportional to 39,711.78, 54,802.26 and 21,806.79 is: 30,093.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,711.78 : 54,802.26 = 21,806.79 : x
  2. Step 2: Convert to fraction form
    39,711.78/54,802.26 = 21,806.79/x
  3. Step 3: Cross multiply
    39,711.78x = 54,802.26 × 21,806.79
  4. Step 4: Simplify right side
    39,711.78x = 1,195,061,375.35
  5. Step 5: Solve for x
    x = 1,195,061,375.35/39,711.78
  6. Step 6: Final answer
    x = 30,093.37

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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.