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Finding the Fourth Proportional to 28,144.91, 38,839.99 and 16,207.99

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Solution

The fourth proportional to 28,144.91, 38,839.99 and 16,207.99 is: 22,367.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.91 : 38,839.99 = 16,207.99 : x
  2. Step 2: Convert to fraction form
    28,144.91/38,839.99 = 16,207.99/x
  3. Step 3: Cross multiply
    28,144.91x = 38,839.99 × 16,207.99
  4. Step 4: Simplify right side
    28,144.91x = 629,518,226.10
  5. Step 5: Solve for x
    x = 629,518,226.10/28,144.91
  6. Step 6: Final answer
    x = 22,367.03

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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.