Home / 15,911.75-21,958.22-8,838.83

Finding the Fourth Proportional to 15,911.75, 21,958.22 and 8,838.83

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Solution

The fourth proportional to 15,911.75, 21,958.22 and 8,838.83 is: 12,197.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.75 : 21,958.22 = 8,838.83 : x
  2. Step 2: Convert to fraction form
    15,911.75/21,958.22 = 8,838.83/x
  3. Step 3: Cross multiply
    15,911.75x = 21,958.22 × 8,838.83
  4. Step 4: Simplify right side
    15,911.75x = 194,084,973.68
  5. Step 5: Solve for x
    x = 194,084,973.68/15,911.75
  6. Step 6: Final answer
    x = 12,197.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.