Home / 21,920.44-30,250.12-12,489.08

Finding the Fourth Proportional to 21,920.44, 30,250.12 and 12,489.08

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Solution

The fourth proportional to 21,920.44, 30,250.12 and 12,489.08 is: 17,234.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.44 : 30,250.12 = 12,489.08 : x
  2. Step 2: Convert to fraction form
    21,920.44/30,250.12 = 12,489.08/x
  3. Step 3: Cross multiply
    21,920.44x = 30,250.12 × 12,489.08
  4. Step 4: Simplify right side
    21,920.44x = 377,796,168.69
  5. Step 5: Solve for x
    x = 377,796,168.69/21,920.44
  6. Step 6: Final answer
    x = 17,234.88

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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.