Home / 21,921.05-30,251.27-11,849.68

Finding the Fourth Proportional to 21,921.05, 30,251.27 and 11,849.68

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Solution

The fourth proportional to 21,921.05, 30,251.27 and 11,849.68 is: 16,352.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.05 : 30,251.27 = 11,849.68 : x
  2. Step 2: Convert to fraction form
    21,921.05/30,251.27 = 11,849.68/x
  3. Step 3: Cross multiply
    21,921.05x = 30,251.27 × 11,849.68
  4. Step 4: Simplify right side
    21,921.05x = 358,467,869.09
  5. Step 5: Solve for x
    x = 358,467,869.09/21,921.05
  6. Step 6: Final answer
    x = 16,352.68

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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.