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Finding the Fourth Proportional to 9,961.64, 14,901.40 and 8,186.68

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Solution

The fourth proportional to 9,961.64, 14,901.40 and 8,186.68 is: 12,246.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,961.64 : 14,901.40 = 8,186.68 : x
  2. Step 2: Convert to fraction form
    9,961.64/14,901.40 = 8,186.68/x
  3. Step 3: Cross multiply
    9,961.64x = 14,901.40 × 8,186.68
  4. Step 4: Simplify right side
    9,961.64x = 121,992,993.35
  5. Step 5: Solve for x
    x = 121,992,993.35/9,961.64
  6. Step 6: Final answer
    x = 12,246.28

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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.