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Finding the Fourth Proportional to 8,803.98, 13,205.98 and 8,220.78

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Solution

The fourth proportional to 8,803.98, 13,205.98 and 8,220.78 is: 12,331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,803.98 : 13,205.98 = 8,220.78 : x
  2. Step 2: Convert to fraction form
    8,803.98/13,205.98 = 8,220.78/x
  3. Step 3: Cross multiply
    8,803.98x = 13,205.98 × 8,220.78
  4. Step 4: Simplify right side
    8,803.98x = 108,563,456.26
  5. Step 5: Solve for x
    x = 108,563,456.26/8,803.98
  6. Step 6: Final answer
    x = 12,331.18

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Half scale
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Double scale
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Similar ratio
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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.