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Finding the Fourth Proportional to 12,186.15, 18,284.88 and 6,632.88

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Solution

The fourth proportional to 12,186.15, 18,284.88 and 6,632.88 is: 9,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.15 : 18,284.88 = 6,632.88 : x
  2. Step 2: Convert to fraction form
    12,186.15/18,284.88 = 6,632.88/x
  3. Step 3: Cross multiply
    12,186.15x = 18,284.88 × 6,632.88
  4. Step 4: Simplify right side
    12,186.15x = 121,281,414.85
  5. Step 5: Solve for x
    x = 121,281,414.85/12,186.15
  6. Step 6: Final answer
    x = 9,952.40

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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.