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Finding the Fourth Proportional to 8,803.89, 13,203 and 8,221.50

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Solution

The fourth proportional to 8,803.89, 13,203 and 8,221.50 is: 12,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,803.89 : 13,203 = 8,221.50 : x
  2. Step 2: Convert to fraction form
    8,803.89/13,203 = 8,221.50/x
  3. Step 3: Cross multiply
    8,803.89x = 13,203 × 8,221.50
  4. Step 4: Simplify right side
    8,803.89x = 108,548,464.50
  5. Step 5: Solve for x
    x = 108,548,464.50/8,803.89
  6. Step 6: Final answer
    x = 12,329.60

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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.