Home / 21,979.86-30,332.19-11,908.33

Finding the Fourth Proportional to 21,979.86, 30,332.19 and 11,908.33

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Solution

The fourth proportional to 21,979.86, 30,332.19 and 11,908.33 is: 16,433.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.86 : 30,332.19 = 11,908.33 : x
  2. Step 2: Convert to fraction form
    21,979.86/30,332.19 = 11,908.33/x
  3. Step 3: Cross multiply
    21,979.86x = 30,332.19 × 11,908.33
  4. Step 4: Simplify right side
    21,979.86x = 361,205,800.60
  5. Step 5: Solve for x
    x = 361,205,800.60/21,979.86
  6. Step 6: Final answer
    x = 16,433.49

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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.