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Finding the Fourth Proportional to 11,974.59, 16,507.79 and 8,426.79

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Solution

The fourth proportional to 11,974.59, 16,507.79 and 8,426.79 is: 11,616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,974.59 : 16,507.79 = 8,426.79 : x
  2. Step 2: Convert to fraction form
    11,974.59/16,507.79 = 8,426.79/x
  3. Step 3: Cross multiply
    11,974.59x = 16,507.79 × 8,426.79
  4. Step 4: Simplify right side
    11,974.59x = 139,107,637.56
  5. Step 5: Solve for x
    x = 139,107,637.56/11,974.59
  6. Step 6: Final answer
    x = 11,616.90

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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.