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Finding the Fourth Proportional to 8,811.81, 13,192.11 and 6,858.09

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Solution

The fourth proportional to 8,811.81, 13,192.11 and 6,858.09 is: 10,267.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.81 : 13,192.11 = 6,858.09 : x
  2. Step 2: Convert to fraction form
    8,811.81/13,192.11 = 6,858.09/x
  3. Step 3: Cross multiply
    8,811.81x = 13,192.11 × 6,858.09
  4. Step 4: Simplify right side
    8,811.81x = 90,472,677.67
  5. Step 5: Solve for x
    x = 90,472,677.67/8,811.81
  6. Step 6: Final answer
    x = 10,267.21

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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.