Home / 39,653.88-54,723.11-21,747.84

Finding the Fourth Proportional to 39,653.88, 54,723.11 and 21,747.84

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Solution

The fourth proportional to 39,653.88, 54,723.11 and 21,747.84 is: 30,012.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,653.88 : 54,723.11 = 21,747.84 : x
  2. Step 2: Convert to fraction form
    39,653.88/54,723.11 = 21,747.84/x
  3. Step 3: Cross multiply
    39,653.88x = 54,723.11 × 21,747.84
  4. Step 4: Simplify right side
    39,653.88x = 1,190,109,331.84
  5. Step 5: Solve for x
    x = 1,190,109,331.84/39,653.88
  6. Step 6: Final answer
    x = 30,012.43

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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.