Home / 21,979.82-30,332.04-11,908.22

Finding the Fourth Proportional to 21,979.82, 30,332.04 and 11,908.22

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Solution

The fourth proportional to 21,979.82, 30,332.04 and 11,908.22 is: 16,433.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.82 : 30,332.04 = 11,908.22 : x
  2. Step 2: Convert to fraction form
    21,979.82/30,332.04 = 11,908.22/x
  3. Step 3: Cross multiply
    21,979.82x = 30,332.04 × 11,908.22
  4. Step 4: Simplify right side
    21,979.82x = 361,200,681.20
  5. Step 5: Solve for x
    x = 361,200,681.20/21,979.82
  6. Step 6: Final answer
    x = 16,433.29

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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.