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Finding the Fourth Proportional to 33,320.43, 45,979.02 and 18,212.13

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Solution

The fourth proportional to 33,320.43, 45,979.02 and 18,212.13 is: 25,131.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,320.43 : 45,979.02 = 18,212.13 : x
  2. Step 2: Convert to fraction form
    33,320.43/45,979.02 = 18,212.13/x
  3. Step 3: Cross multiply
    33,320.43x = 45,979.02 × 18,212.13
  4. Step 4: Simplify right side
    33,320.43x = 837,375,889.51
  5. Step 5: Solve for x
    x = 837,375,889.51/33,320.43
  6. Step 6: Final answer
    x = 25,131.00

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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.