Home / 21,921.68-30,252.05-11,850.09

Finding the Fourth Proportional to 21,921.68, 30,252.05 and 11,850.09

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Solution

The fourth proportional to 21,921.68, 30,252.05 and 11,850.09 is: 16,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.68 : 30,252.05 = 11,850.09 : x
  2. Step 2: Convert to fraction form
    21,921.68/30,252.05 = 11,850.09/x
  3. Step 3: Cross multiply
    21,921.68x = 30,252.05 × 11,850.09
  4. Step 4: Simplify right side
    21,921.68x = 358,489,515.18
  5. Step 5: Solve for x
    x = 358,489,515.18/21,921.68
  6. Step 6: Final answer
    x = 16,353.20

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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.