Home / 39,694.83-54,778.65-21,790.14

Finding the Fourth Proportional to 39,694.83, 54,778.65 and 21,790.14

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Solution

The fourth proportional to 39,694.83, 54,778.65 and 21,790.14 is: 30,070.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.83 : 54,778.65 = 21,790.14 : x
  2. Step 2: Convert to fraction form
    39,694.83/54,778.65 = 21,790.14/x
  3. Step 3: Cross multiply
    39,694.83x = 54,778.65 × 21,790.14
  4. Step 4: Simplify right side
    39,694.83x = 1,193,634,452.51
  5. Step 5: Solve for x
    x = 1,193,634,452.51/39,694.83
  6. Step 6: Final answer
    x = 30,070.27

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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.