Home / 39,694.05-54,779.76-21,788.91

Finding the Fourth Proportional to 39,694.05, 54,779.76 and 21,788.91

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Solution

The fourth proportional to 39,694.05, 54,779.76 and 21,788.91 is: 30,069.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.05 : 54,779.76 = 21,788.91 : x
  2. Step 2: Convert to fraction form
    39,694.05/54,779.76 = 21,788.91/x
  3. Step 3: Cross multiply
    39,694.05x = 54,779.76 × 21,788.91
  4. Step 4: Simplify right side
    39,694.05x = 1,193,591,260.46
  5. Step 5: Solve for x
    x = 1,193,591,260.46/39,694.05
  6. Step 6: Final answer
    x = 30,069.78

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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.