Home / 28,706.25-43,061.85-7,929.75

Finding the Fourth Proportional to 28,706.25, 43,061.85 and 7,929.75

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Solution

The fourth proportional to 28,706.25, 43,061.85 and 7,929.75 is: 11,895.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,706.25 : 43,061.85 = 7,929.75 : x
  2. Step 2: Convert to fraction form
    28,706.25/43,061.85 = 7,929.75/x
  3. Step 3: Cross multiply
    28,706.25x = 43,061.85 × 7,929.75
  4. Step 4: Simplify right side
    28,706.25x = 341,469,705.04
  5. Step 5: Solve for x
    x = 341,469,705.04/28,706.25
  6. Step 6: Final answer
    x = 11,895.31

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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.