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Finding the Fourth Proportional to 29,698.78, 40,968.77 and 18,364.66

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Solution

The fourth proportional to 29,698.78, 40,968.77 and 18,364.66 is: 25,333.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,698.78 : 40,968.77 = 18,364.66 : x
  2. Step 2: Convert to fraction form
    29,698.78/40,968.77 = 18,364.66/x
  3. Step 3: Cross multiply
    29,698.78x = 40,968.77 × 18,364.66
  4. Step 4: Simplify right side
    29,698.78x = 752,377,326.82
  5. Step 5: Solve for x
    x = 752,377,326.82/29,698.78
  6. Step 6: Final answer
    x = 25,333.61

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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.