Home / 11,815.23-17,717.43-5,151.45

Finding the Fourth Proportional to 11,815.23, 17,717.43 and 5,151.45

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Solution

The fourth proportional to 11,815.23, 17,717.43 and 5,151.45 is: 7,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.23 : 17,717.43 = 5,151.45 : x
  2. Step 2: Convert to fraction form
    11,815.23/17,717.43 = 5,151.45/x
  3. Step 3: Cross multiply
    11,815.23x = 17,717.43 × 5,151.45
  4. Step 4: Simplify right side
    11,815.23x = 91,270,454.77
  5. Step 5: Solve for x
    x = 91,270,454.77/11,815.23
  6. Step 6: Final answer
    x = 7,724.81

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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.