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Finding the Fourth Proportional to 20,163, 27,751.50 and 17,757.18

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Solution

The fourth proportional to 20,163, 27,751.50 and 17,757.18 is: 24,440.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163 : 27,751.50 = 17,757.18 : x
  2. Step 2: Convert to fraction form
    20,163/27,751.50 = 17,757.18/x
  3. Step 3: Cross multiply
    20,163x = 27,751.50 × 17,757.18
  4. Step 4: Simplify right side
    20,163x = 492,788,380.77
  5. Step 5: Solve for x
    x = 492,788,380.77/20,163
  6. Step 6: Final answer
    x = 24,440.23

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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.