Home / 39,703.70-54,791.21-21,799.86

Finding the Fourth Proportional to 39,703.70, 54,791.21 and 21,799.86

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Solution

The fourth proportional to 39,703.70, 54,791.21 and 21,799.86 is: 30,083.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,703.70 : 54,791.21 = 21,799.86 : x
  2. Step 2: Convert to fraction form
    39,703.70/54,791.21 = 21,799.86/x
  3. Step 3: Cross multiply
    39,703.70x = 54,791.21 × 21,799.86
  4. Step 4: Simplify right side
    39,703.70x = 1,194,440,967.20
  5. Step 5: Solve for x
    x = 1,194,440,967.20/39,703.70
  6. Step 6: Final answer
    x = 30,083.87

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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.