Home / 11,427.45-17,143.32-5,187.90

Finding the Fourth Proportional to 11,427.45, 17,143.32 and 5,187.90

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Solution

The fourth proportional to 11,427.45, 17,143.32 and 5,187.90 is: 7,782.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,427.45 : 17,143.32 = 5,187.90 : x
  2. Step 2: Convert to fraction form
    11,427.45/17,143.32 = 5,187.90/x
  3. Step 3: Cross multiply
    11,427.45x = 17,143.32 × 5,187.90
  4. Step 4: Simplify right side
    11,427.45x = 88,937,851.26
  5. Step 5: Solve for x
    x = 88,937,851.26/11,427.45
  6. Step 6: Final answer
    x = 7,782.83

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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.