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Finding the Fourth Proportional to 28,143.59, 38,834.84 and 16,207.43

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Solution

The fourth proportional to 28,143.59, 38,834.84 and 16,207.43 is: 22,364.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.59 : 38,834.84 = 16,207.43 : x
  2. Step 2: Convert to fraction form
    28,143.59/38,834.84 = 16,207.43/x
  3. Step 3: Cross multiply
    28,143.59x = 38,834.84 × 16,207.43
  4. Step 4: Simplify right side
    28,143.59x = 629,412,797.21
  5. Step 5: Solve for x
    x = 629,412,797.21/28,143.59
  6. Step 6: Final answer
    x = 22,364.34

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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.