Home / 39,625.70-54,685.07-21,721.35

Finding the Fourth Proportional to 39,625.70, 54,685.07 and 21,721.35

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Solution

The fourth proportional to 39,625.70, 54,685.07 and 21,721.35 is: 29,976.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,625.70 : 54,685.07 = 21,721.35 : x
  2. Step 2: Convert to fraction form
    39,625.70/54,685.07 = 21,721.35/x
  3. Step 3: Cross multiply
    39,625.70x = 54,685.07 × 21,721.35
  4. Step 4: Simplify right side
    39,625.70x = 1,187,833,436.64
  5. Step 5: Solve for x
    x = 1,187,833,436.64/39,625.70
  6. Step 6: Final answer
    x = 29,976.34

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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.