Home / 15,872.85-23,812.71-4,778.69

Finding the Fourth Proportional to 15,872.85, 23,812.71 and 4,778.69

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Solution

The fourth proportional to 15,872.85, 23,812.71 and 4,778.69 is: 7,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.85 : 23,812.71 = 4,778.69 : x
  2. Step 2: Convert to fraction form
    15,872.85/23,812.71 = 4,778.69/x
  3. Step 3: Cross multiply
    15,872.85x = 23,812.71 × 4,778.69
  4. Step 4: Simplify right side
    15,872.85x = 113,793,440.09
  5. Step 5: Solve for x
    x = 113,793,440.09/15,872.85
  6. Step 6: Final answer
    x = 7,169.06

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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.