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Finding the Fourth Proportional to 35,212.90, 52,821.28 and 8,917.88

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Solution

The fourth proportional to 35,212.90, 52,821.28 and 8,917.88 is: 13,377.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,212.90 : 52,821.28 = 8,917.88 : x
  2. Step 2: Convert to fraction form
    35,212.90/52,821.28 = 8,917.88/x
  3. Step 3: Cross multiply
    35,212.90x = 52,821.28 × 8,917.88
  4. Step 4: Simplify right side
    35,212.90x = 471,053,836.49
  5. Step 5: Solve for x
    x = 471,053,836.49/35,212.90
  6. Step 6: Final answer
    x = 13,377.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.