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Finding the Fourth Proportional to 33,060, 45,626.96 and 20,486.64

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Solution

The fourth proportional to 33,060, 45,626.96 and 20,486.64 is: 28,274.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,060 : 45,626.96 = 20,486.64 : x
  2. Step 2: Convert to fraction form
    33,060/45,626.96 = 20,486.64/x
  3. Step 3: Cross multiply
    33,060x = 45,626.96 × 20,486.64
  4. Step 4: Simplify right side
    33,060x = 934,743,103.81
  5. Step 5: Solve for x
    x = 934,743,103.81/33,060
  6. Step 6: Final answer
    x = 28,274.14

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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.