Home / 39,694.31-54,778.54-21,788.92

Finding the Fourth Proportional to 39,694.31, 54,778.54 and 21,788.92

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Solution

The fourth proportional to 39,694.31, 54,778.54 and 21,788.92 is: 30,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.31 : 54,778.54 = 21,788.92 : x
  2. Step 2: Convert to fraction form
    39,694.31/54,778.54 = 21,788.92/x
  3. Step 3: Cross multiply
    39,694.31x = 54,778.54 × 21,788.92
  4. Step 4: Simplify right side
    39,694.31x = 1,193,565,225.78
  5. Step 5: Solve for x
    x = 1,193,565,225.78/39,694.31
  6. Step 6: Final answer
    x = 30,068.92

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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.