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Finding the Fourth Proportional to 15,951.89, 23,919.86 and 9,290.65

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Solution

The fourth proportional to 15,951.89, 23,919.86 and 9,290.65 is: 13,931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,951.89 : 23,919.86 = 9,290.65 : x
  2. Step 2: Convert to fraction form
    15,951.89/23,919.86 = 9,290.65/x
  3. Step 3: Cross multiply
    15,951.89x = 23,919.86 × 9,290.65
  4. Step 4: Simplify right side
    15,951.89x = 222,231,003.33
  5. Step 5: Solve for x
    x = 222,231,003.33/15,951.89
  6. Step 6: Final answer
    x = 13,931.33

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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.