Home / 39,521.45-54,540.42-21,617.61

Finding the Fourth Proportional to 39,521.45, 54,540.42 and 21,617.61

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Solution

The fourth proportional to 39,521.45, 54,540.42 and 21,617.61 is: 29,832.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,521.45 : 54,540.42 = 21,617.61 : x
  2. Step 2: Convert to fraction form
    39,521.45/54,540.42 = 21,617.61/x
  3. Step 3: Cross multiply
    39,521.45x = 54,540.42 × 21,617.61
  4. Step 4: Simplify right side
    39,521.45x = 1,179,033,528.80
  5. Step 5: Solve for x
    x = 1,179,033,528.80/39,521.45
  6. Step 6: Final answer
    x = 29,832.75

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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.