Home / 13,242.96-19,860-5,343.44

Finding the Fourth Proportional to 13,242.96, 19,860 and 5,343.44

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Solution

The fourth proportional to 13,242.96, 19,860 and 5,343.44 is: 8,013.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.96 : 19,860 = 5,343.44 : x
  2. Step 2: Convert to fraction form
    13,242.96/19,860 = 5,343.44/x
  3. Step 3: Cross multiply
    13,242.96x = 19,860 × 5,343.44
  4. Step 4: Simplify right side
    13,242.96x = 106,120,619.10
  5. Step 5: Solve for x
    x = 106,120,619.10/13,242.96
  6. Step 6: Final answer
    x = 8,013.36

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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.