Home / 39,658.14-54,729.77-21,753.90

Finding the Fourth Proportional to 39,658.14, 54,729.77 and 21,753.90

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Solution

The fourth proportional to 39,658.14, 54,729.77 and 21,753.90 is: 30,021.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.14 : 54,729.77 = 21,753.90 : x
  2. Step 2: Convert to fraction form
    39,658.14/54,729.77 = 21,753.90/x
  3. Step 3: Cross multiply
    39,658.14x = 54,729.77 × 21,753.90
  4. Step 4: Simplify right side
    39,658.14x = 1,190,585,834.83
  5. Step 5: Solve for x
    x = 1,190,585,834.83/39,658.14
  6. Step 6: Final answer
    x = 30,021.22

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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.