Home / 39,778.58-54,894.68-21,873.74

Finding the Fourth Proportional to 39,778.58, 54,894.68 and 21,873.74

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Solution

The fourth proportional to 39,778.58, 54,894.68 and 21,873.74 is: 30,185.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,778.58 : 54,894.68 = 21,873.74 : x
  2. Step 2: Convert to fraction form
    39,778.58/54,894.68 = 21,873.74/x
  3. Step 3: Cross multiply
    39,778.58x = 54,894.68 × 21,873.74
  4. Step 4: Simplify right side
    39,778.58x = 1,200,751,957.70
  5. Step 5: Solve for x
    x = 1,200,751,957.70/39,778.58
  6. Step 6: Final answer
    x = 30,185.89

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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.