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Finding the Fourth Proportional to 33,103.88, 45,680.64 and 19,489.76

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Solution

The fourth proportional to 33,103.88, 45,680.64 and 19,489.76 is: 26,894.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,103.88 : 45,680.64 = 19,489.76 : x
  2. Step 2: Convert to fraction form
    33,103.88/45,680.64 = 19,489.76/x
  3. Step 3: Cross multiply
    33,103.88x = 45,680.64 × 19,489.76
  4. Step 4: Simplify right side
    33,103.88x = 890,304,710.25
  5. Step 5: Solve for x
    x = 890,304,710.25/33,103.88
  6. Step 6: Final answer
    x = 26,894.27

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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.