Home / 39,478.82-54,481.48-21,574.58

Finding the Fourth Proportional to 39,478.82, 54,481.48 and 21,574.58

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Solution

The fourth proportional to 39,478.82, 54,481.48 and 21,574.58 is: 29,773.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,478.82 : 54,481.48 = 21,574.58 : x
  2. Step 2: Convert to fraction form
    39,478.82/54,481.48 = 21,574.58/x
  3. Step 3: Cross multiply
    39,478.82x = 54,481.48 × 21,574.58
  4. Step 4: Simplify right side
    39,478.82x = 1,175,414,722.43
  5. Step 5: Solve for x
    x = 1,175,414,722.43/39,478.82
  6. Step 6: Final answer
    x = 29,773.30

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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.