Home / 12,551.25-18,816.15-5,151.09

Finding the Fourth Proportional to 12,551.25, 18,816.15 and 5,151.09

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Solution

The fourth proportional to 12,551.25, 18,816.15 and 5,151.09 is: 7,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.25 : 18,816.15 = 5,151.09 : x
  2. Step 2: Convert to fraction form
    12,551.25/18,816.15 = 5,151.09/x
  3. Step 3: Cross multiply
    12,551.25x = 18,816.15 × 5,151.09
  4. Step 4: Simplify right side
    12,551.25x = 96,923,682.10
  5. Step 5: Solve for x
    x = 96,923,682.10/12,551.25
  6. Step 6: Final answer
    x = 7,722.23

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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.