Home / 21,908.32-30,233.46-11,972.32

Finding the Fourth Proportional to 21,908.32, 30,233.46 and 11,972.32

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Solution

The fourth proportional to 21,908.32, 30,233.46 and 11,972.32 is: 16,521.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.32 : 30,233.46 = 11,972.32 : x
  2. Step 2: Convert to fraction form
    21,908.32/30,233.46 = 11,972.32/x
  3. Step 3: Cross multiply
    21,908.32x = 30,233.46 × 11,972.32
  4. Step 4: Simplify right side
    21,908.32x = 361,964,657.83
  5. Step 5: Solve for x
    x = 361,964,657.83/21,908.32
  6. Step 6: Final answer
    x = 16,521.79

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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.