Home / 12,869.68-19,305.96-4,102.56

Finding the Fourth Proportional to 12,869.68, 19,305.96 and 4,102.56

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Solution

The fourth proportional to 12,869.68, 19,305.96 and 4,102.56 is: 6,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.68 : 19,305.96 = 4,102.56 : x
  2. Step 2: Convert to fraction form
    12,869.68/19,305.96 = 4,102.56/x
  3. Step 3: Cross multiply
    12,869.68x = 19,305.96 × 4,102.56
  4. Step 4: Simplify right side
    12,869.68x = 79,203,859.26
  5. Step 5: Solve for x
    x = 79,203,859.26/12,869.68
  6. Step 6: Final answer
    x = 6,154.30

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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.