Home / 13,138.11-19,709.96-4,253.90

Finding the Fourth Proportional to 13,138.11, 19,709.96 and 4,253.90

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Solution

The fourth proportional to 13,138.11, 19,709.96 and 4,253.90 is: 6,381.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.11 : 19,709.96 = 4,253.90 : x
  2. Step 2: Convert to fraction form
    13,138.11/19,709.96 = 4,253.90/x
  3. Step 3: Cross multiply
    13,138.11x = 19,709.96 × 4,253.90
  4. Step 4: Simplify right side
    13,138.11x = 83,844,079.02
  5. Step 5: Solve for x
    x = 83,844,079.02/13,138.11
  6. Step 6: Final answer
    x = 6,381.75

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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.