Home / 39,434.82-54,420.33-21,530.24

Finding the Fourth Proportional to 39,434.82, 54,420.33 and 21,530.24

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Solution

The fourth proportional to 39,434.82, 54,420.33 and 21,530.24 is: 29,711.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,434.82 : 54,420.33 = 21,530.24 : x
  2. Step 2: Convert to fraction form
    39,434.82/54,420.33 = 21,530.24/x
  3. Step 3: Cross multiply
    39,434.82x = 54,420.33 × 21,530.24
  4. Step 4: Simplify right side
    39,434.82x = 1,171,682,493.68
  5. Step 5: Solve for x
    x = 1,171,682,493.68/39,434.82
  6. Step 6: Final answer
    x = 29,711.88

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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.