Home / 39,711.60-54,801.76-21,806.88

Finding the Fourth Proportional to 39,711.60, 54,801.76 and 21,806.88

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Solution

The fourth proportional to 39,711.60, 54,801.76 and 21,806.88 is: 30,093.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,711.60 : 54,801.76 = 21,806.88 : x
  2. Step 2: Convert to fraction form
    39,711.60/54,801.76 = 21,806.88/x
  3. Step 3: Cross multiply
    39,711.60x = 54,801.76 × 21,806.88
  4. Step 4: Simplify right side
    39,711.60x = 1,195,055,404.11
  5. Step 5: Solve for x
    x = 1,195,055,404.11/39,711.60
  6. Step 6: Final answer
    x = 30,093.36

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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.