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Finding the Fourth Proportional to 33,138.84, 45,731.84 and 18,031.64

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Solution

The fourth proportional to 33,138.84, 45,731.84 and 18,031.64 is: 24,883.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,138.84 : 45,731.84 = 18,031.64 : x
  2. Step 2: Convert to fraction form
    33,138.84/45,731.84 = 18,031.64/x
  3. Step 3: Cross multiply
    33,138.84x = 45,731.84 × 18,031.64
  4. Step 4: Simplify right side
    33,138.84x = 824,619,756.60
  5. Step 5: Solve for x
    x = 824,619,756.60/33,138.84
  6. Step 6: Final answer
    x = 24,883.78

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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.