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Finding the Fourth Proportional to 12,207.87, 16,846.89 and 6,618.87

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Solution

The fourth proportional to 12,207.87, 16,846.89 and 6,618.87 is: 9,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,207.87 : 16,846.89 = 6,618.87 : x
  2. Step 2: Convert to fraction form
    12,207.87/16,846.89 = 6,618.87/x
  3. Step 3: Cross multiply
    12,207.87x = 16,846.89 × 6,618.87
  4. Step 4: Simplify right side
    12,207.87x = 111,507,374.81
  5. Step 5: Solve for x
    x = 111,507,374.81/12,207.87
  6. Step 6: Final answer
    x = 9,134.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.