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Finding the Fourth Proportional to 12,839.99, 19,251.68 and 8,444.12

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Solution

The fourth proportional to 12,839.99, 19,251.68 and 8,444.12 is: 12,660.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.99 : 19,251.68 = 8,444.12 : x
  2. Step 2: Convert to fraction form
    12,839.99/19,251.68 = 8,444.12/x
  3. Step 3: Cross multiply
    12,839.99x = 19,251.68 × 8,444.12
  4. Step 4: Simplify right side
    12,839.99x = 162,563,453.90
  5. Step 5: Solve for x
    x = 162,563,453.90/12,839.99
  6. Step 6: Final answer
    x = 12,660.71

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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.