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Finding the Fourth Proportional to 17,191.90, 25,811.78 and 8,877.90

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Solution

The fourth proportional to 17,191.90, 25,811.78 and 8,877.90 is: 13,329.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,191.90 : 25,811.78 = 8,877.90 : x
  2. Step 2: Convert to fraction form
    17,191.90/25,811.78 = 8,877.90/x
  3. Step 3: Cross multiply
    17,191.90x = 25,811.78 × 8,877.90
  4. Step 4: Simplify right side
    17,191.90x = 229,154,401.66
  5. Step 5: Solve for x
    x = 229,154,401.66/17,191.90
  6. Step 6: Final answer
    x = 13,329.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.