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Finding the Fourth Proportional to 8,815.18, 13,224.39 and 7,186.18

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Solution

The fourth proportional to 8,815.18, 13,224.39 and 7,186.18 is: 10,780.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.18 : 13,224.39 = 7,186.18 : x
  2. Step 2: Convert to fraction form
    8,815.18/13,224.39 = 7,186.18/x
  3. Step 3: Cross multiply
    8,815.18x = 13,224.39 × 7,186.18
  4. Step 4: Simplify right side
    8,815.18x = 95,032,846.93
  5. Step 5: Solve for x
    x = 95,032,846.93/8,815.18
  6. Step 6: Final answer
    x = 10,780.59

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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.