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Finding the Fourth Proportional to 33,293, 45,924.90 and 20,721.80

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Solution

The fourth proportional to 33,293, 45,924.90 and 20,721.80 is: 28,583.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,293 : 45,924.90 = 20,721.80 : x
  2. Step 2: Convert to fraction form
    33,293/45,924.90 = 20,721.80/x
  3. Step 3: Cross multiply
    33,293x = 45,924.90 × 20,721.80
  4. Step 4: Simplify right side
    33,293x = 951,646,592.82
  5. Step 5: Solve for x
    x = 951,646,592.82/33,293
  6. Step 6: Final answer
    x = 28,583.98

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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.