Home / 39,705.09-54,793.50-21,799.73

Finding the Fourth Proportional to 39,705.09, 54,793.50 and 21,799.73

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Solution

The fourth proportional to 39,705.09, 54,793.50 and 21,799.73 is: 30,083.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,705.09 : 54,793.50 = 21,799.73 : x
  2. Step 2: Convert to fraction form
    39,705.09/54,793.50 = 21,799.73/x
  3. Step 3: Cross multiply
    39,705.09x = 54,793.50 × 21,799.73
  4. Step 4: Simplify right side
    39,705.09x = 1,194,483,560.99
  5. Step 5: Solve for x
    x = 1,194,483,560.99/39,705.09
  6. Step 6: Final answer
    x = 30,083.89

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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.