Home / 15,911.91-21,958.79-8,741.92

Finding the Fourth Proportional to 15,911.91, 21,958.79 and 8,741.92

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Solution

The fourth proportional to 15,911.91, 21,958.79 and 8,741.92 is: 12,064.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.91 : 21,958.79 = 8,741.92 : x
  2. Step 2: Convert to fraction form
    15,911.91/21,958.79 = 8,741.92/x
  3. Step 3: Cross multiply
    15,911.91x = 21,958.79 × 8,741.92
  4. Step 4: Simplify right side
    15,911.91x = 191,961,831.97
  5. Step 5: Solve for x
    x = 191,961,831.97/15,911.91
  6. Step 6: Final answer
    x = 12,064.03

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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.