Home / 39,814.87-54,943.35-21,909.86

Finding the Fourth Proportional to 39,814.87, 54,943.35 and 21,909.86

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Solution

The fourth proportional to 39,814.87, 54,943.35 and 21,909.86 is: 30,234.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,814.87 : 54,943.35 = 21,909.86 : x
  2. Step 2: Convert to fraction form
    39,814.87/54,943.35 = 21,909.86/x
  3. Step 3: Cross multiply
    39,814.87x = 54,943.35 × 21,909.86
  4. Step 4: Simplify right side
    39,814.87x = 1,203,801,106.43
  5. Step 5: Solve for x
    x = 1,203,801,106.43/39,814.87
  6. Step 6: Final answer
    x = 30,234.97

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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.