Home / 13,135.55-19,708.29-7,874.31

Finding the Fourth Proportional to 13,135.55, 19,708.29 and 7,874.31

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Solution

The fourth proportional to 13,135.55, 19,708.29 and 7,874.31 is: 11,814.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.55 : 19,708.29 = 7,874.31 : x
  2. Step 2: Convert to fraction form
    13,135.55/19,708.29 = 7,874.31/x
  3. Step 3: Cross multiply
    13,135.55x = 19,708.29 × 7,874.31
  4. Step 4: Simplify right side
    13,135.55x = 155,189,185.03
  5. Step 5: Solve for x
    x = 155,189,185.03/13,135.55
  6. Step 6: Final answer
    x = 11,814.44

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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.