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Finding the Fourth Proportional to 12,482.82, 18,687.78 and 11,148.84

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Solution

The fourth proportional to 12,482.82, 18,687.78 and 11,148.84 is: 16,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.82 : 18,687.78 = 11,148.84 : x
  2. Step 2: Convert to fraction form
    12,482.82/18,687.78 = 11,148.84/x
  3. Step 3: Cross multiply
    12,482.82x = 18,687.78 × 11,148.84
  4. Step 4: Simplify right side
    12,482.82x = 208,347,069.18
  5. Step 5: Solve for x
    x = 208,347,069.18/12,482.82
  6. Step 6: Final answer
    x = 16,690.71

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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.