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Finding the Fourth Proportional to 16,811.80, 25,224.90 and 8,603.80

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Solution

The fourth proportional to 16,811.80, 25,224.90 and 8,603.80 is: 12,909.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,811.80 : 25,224.90 = 8,603.80 : x
  2. Step 2: Convert to fraction form
    16,811.80/25,224.90 = 8,603.80/x
  3. Step 3: Cross multiply
    16,811.80x = 25,224.90 × 8,603.80
  4. Step 4: Simplify right side
    16,811.80x = 217,029,994.62
  5. Step 5: Solve for x
    x = 217,029,994.62/16,811.80
  6. Step 6: Final answer
    x = 12,909.38

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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.