Home / 39,692.68-54,776.51-21,789.31

Finding the Fourth Proportional to 39,692.68, 54,776.51 and 21,789.31

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Solution

The fourth proportional to 39,692.68, 54,776.51 and 21,789.31 is: 30,069.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,692.68 : 54,776.51 = 21,789.31 : x
  2. Step 2: Convert to fraction form
    39,692.68/54,776.51 = 21,789.31/x
  3. Step 3: Cross multiply
    39,692.68x = 54,776.51 × 21,789.31
  4. Step 4: Simplify right side
    39,692.68x = 1,193,542,357.11
  5. Step 5: Solve for x
    x = 1,193,542,357.11/39,692.68
  6. Step 6: Final answer
    x = 30,069.58

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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.