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Finding the Fourth Proportional to 8,669.18, 13,003.78 and 6,830.08

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Solution

The fourth proportional to 8,669.18, 13,003.78 and 6,830.08 is: 10,245.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.18 : 13,003.78 = 6,830.08 : x
  2. Step 2: Convert to fraction form
    8,669.18/13,003.78 = 6,830.08/x
  3. Step 3: Cross multiply
    8,669.18x = 13,003.78 × 6,830.08
  4. Step 4: Simplify right side
    8,669.18x = 88,816,857.70
  5. Step 5: Solve for x
    x = 88,816,857.70/8,669.18
  6. Step 6: Final answer
    x = 10,245.13

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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.