Home / 21,976.47-30,327.67-11,904.91

Finding the Fourth Proportional to 21,976.47, 30,327.67 and 11,904.91

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Solution

The fourth proportional to 21,976.47, 30,327.67 and 11,904.91 is: 16,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,976.47 : 30,327.67 = 11,904.91 : x
  2. Step 2: Convert to fraction form
    21,976.47/30,327.67 = 11,904.91/x
  3. Step 3: Cross multiply
    21,976.47x = 30,327.67 × 11,904.91
  4. Step 4: Simplify right side
    21,976.47x = 361,048,120.92
  5. Step 5: Solve for x
    x = 361,048,120.92/21,976.47
  6. Step 6: Final answer
    x = 16,428.85

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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.