Home / 39,436.82-54,422.39-21,531.77

Finding the Fourth Proportional to 39,436.82, 54,422.39 and 21,531.77

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Solution

The fourth proportional to 39,436.82, 54,422.39 and 21,531.77 is: 29,713.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,436.82 : 54,422.39 = 21,531.77 : x
  2. Step 2: Convert to fraction form
    39,436.82/54,422.39 = 21,531.77/x
  3. Step 3: Cross multiply
    39,436.82x = 54,422.39 × 21,531.77
  4. Step 4: Simplify right side
    39,436.82x = 1,171,810,166.05
  5. Step 5: Solve for x
    x = 1,171,810,166.05/39,436.82
  6. Step 6: Final answer
    x = 29,713.61

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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.