Home / 39,709.14-54,799.23-21,805.75

Finding the Fourth Proportional to 39,709.14, 54,799.23 and 21,805.75

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Solution

The fourth proportional to 39,709.14, 54,799.23 and 21,805.75 is: 30,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,709.14 : 54,799.23 = 21,805.75 : x
  2. Step 2: Convert to fraction form
    39,709.14/54,799.23 = 21,805.75/x
  3. Step 3: Cross multiply
    39,709.14x = 54,799.23 × 21,805.75
  4. Step 4: Simplify right side
    39,709.14x = 1,194,938,309.57
  5. Step 5: Solve for x
    x = 1,194,938,309.57/39,709.14
  6. Step 6: Final answer
    x = 30,092.27

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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.