Home / 12,788.08-19,187.43-6,121.22

Finding the Fourth Proportional to 12,788.08, 19,187.43 and 6,121.22

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Solution

The fourth proportional to 12,788.08, 19,187.43 and 6,121.22 is: 9,184.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.08 : 19,187.43 = 6,121.22 : x
  2. Step 2: Convert to fraction form
    12,788.08/19,187.43 = 6,121.22/x
  3. Step 3: Cross multiply
    12,788.08x = 19,187.43 × 6,121.22
  4. Step 4: Simplify right side
    12,788.08x = 117,450,503.73
  5. Step 5: Solve for x
    x = 117,450,503.73/12,788.08
  6. Step 6: Final answer
    x = 9,184.38

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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.