Home / 12,551.36-18,828.78-4,233.75

Finding the Fourth Proportional to 12,551.36, 18,828.78 and 4,233.75

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Solution

The fourth proportional to 12,551.36, 18,828.78 and 4,233.75 is: 6,351.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.36 : 18,828.78 = 4,233.75 : x
  2. Step 2: Convert to fraction form
    12,551.36/18,828.78 = 4,233.75/x
  3. Step 3: Cross multiply
    12,551.36x = 18,828.78 × 4,233.75
  4. Step 4: Simplify right side
    12,551.36x = 79,716,347.33
  5. Step 5: Solve for x
    x = 79,716,347.33/12,551.36
  6. Step 6: Final answer
    x = 6,351.21

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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.