Home / 39,658.61-54,728.91-21,753.96

Finding the Fourth Proportional to 39,658.61, 54,728.91 and 21,753.96

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Solution

The fourth proportional to 39,658.61, 54,728.91 and 21,753.96 is: 30,020.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.61 : 54,728.91 = 21,753.96 : x
  2. Step 2: Convert to fraction form
    39,658.61/54,728.91 = 21,753.96/x
  3. Step 3: Cross multiply
    39,658.61x = 54,728.91 × 21,753.96
  4. Step 4: Simplify right side
    39,658.61x = 1,190,570,518.98
  5. Step 5: Solve for x
    x = 1,190,570,518.98/39,658.61
  6. Step 6: Final answer
    x = 30,020.48

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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.