Home / 12,928.83-19,354.97-7,982.57

Finding the Fourth Proportional to 12,928.83, 19,354.97 and 7,982.57

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Solution

The fourth proportional to 12,928.83, 19,354.97 and 7,982.57 is: 11,950.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.83 : 19,354.97 = 7,982.57 : x
  2. Step 2: Convert to fraction form
    12,928.83/19,354.97 = 7,982.57/x
  3. Step 3: Cross multiply
    12,928.83x = 19,354.97 × 7,982.57
  4. Step 4: Simplify right side
    12,928.83x = 154,502,326.05
  5. Step 5: Solve for x
    x = 154,502,326.05/12,928.83
  6. Step 6: Final answer
    x = 11,950.22

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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.