Home / 16,645.43-22,939.12-11,921.51

Finding the Fourth Proportional to 16,645.43, 22,939.12 and 11,921.51

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Solution

The fourth proportional to 16,645.43, 22,939.12 and 11,921.51 is: 16,429.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,645.43 : 22,939.12 = 11,921.51 : x
  2. Step 2: Convert to fraction form
    16,645.43/22,939.12 = 11,921.51/x
  3. Step 3: Cross multiply
    16,645.43x = 22,939.12 × 11,921.51
  4. Step 4: Simplify right side
    16,645.43x = 273,468,948.47
  5. Step 5: Solve for x
    x = 273,468,948.47/16,645.43
  6. Step 6: Final answer
    x = 16,429.07

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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.