Home / 12,799-19,196.27-3,439.65

Finding the Fourth Proportional to 12,799, 19,196.27 and 3,439.65

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Solution

The fourth proportional to 12,799, 19,196.27 and 3,439.65 is: 5,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,799 : 19,196.27 = 3,439.65 : x
  2. Step 2: Convert to fraction form
    12,799/19,196.27 = 3,439.65/x
  3. Step 3: Cross multiply
    12,799x = 19,196.27 × 3,439.65
  4. Step 4: Simplify right side
    12,799x = 66,028,450.11
  5. Step 5: Solve for x
    x = 66,028,450.11/12,799
  6. Step 6: Final answer
    x = 5,158.88

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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.