Home / 13,311.16-19,965.28-3,449.68

Finding the Fourth Proportional to 13,311.16, 19,965.28 and 3,449.68

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Solution

The fourth proportional to 13,311.16, 19,965.28 and 3,449.68 is: 5,174.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.16 : 19,965.28 = 3,449.68 : x
  2. Step 2: Convert to fraction form
    13,311.16/19,965.28 = 3,449.68/x
  3. Step 3: Cross multiply
    13,311.16x = 19,965.28 × 3,449.68
  4. Step 4: Simplify right side
    13,311.16x = 68,873,827.11
  5. Step 5: Solve for x
    x = 68,873,827.11/13,311.16
  6. Step 6: Final answer
    x = 5,174.14

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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.