Home / 13,178.82-19,768.12-5,382.16

Finding the Fourth Proportional to 13,178.82, 19,768.12 and 5,382.16

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Solution

The fourth proportional to 13,178.82, 19,768.12 and 5,382.16 is: 8,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.82 : 19,768.12 = 5,382.16 : x
  2. Step 2: Convert to fraction form
    13,178.82/19,768.12 = 5,382.16/x
  3. Step 3: Cross multiply
    13,178.82x = 19,768.12 × 5,382.16
  4. Step 4: Simplify right side
    13,178.82x = 106,395,157.83
  5. Step 5: Solve for x
    x = 106,395,157.83/13,178.82
  6. Step 6: Final answer
    x = 8,073.19

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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.