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Finding the Fourth Proportional to 14,486.87, 19,991.18 and 8,896.79

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Solution

The fourth proportional to 14,486.87, 19,991.18 and 8,896.79 is: 12,277.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.87 : 19,991.18 = 8,896.79 : x
  2. Step 2: Convert to fraction form
    14,486.87/19,991.18 = 8,896.79/x
  3. Step 3: Cross multiply
    14,486.87x = 19,991.18 × 8,896.79
  4. Step 4: Simplify right side
    14,486.87x = 177,857,185.87
  5. Step 5: Solve for x
    x = 177,857,185.87/14,486.87
  6. Step 6: Final answer
    x = 12,277.13

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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.