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Finding the Fourth Proportional to 29,476.69, 40,665.78 and 18,142.77

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Solution

The fourth proportional to 29,476.69, 40,665.78 and 18,142.77 is: 25,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,476.69 : 40,665.78 = 18,142.77 : x
  2. Step 2: Convert to fraction form
    29,476.69/40,665.78 = 18,142.77/x
  3. Step 3: Cross multiply
    29,476.69x = 40,665.78 × 18,142.77
  4. Step 4: Simplify right side
    29,476.69x = 737,789,893.41
  5. Step 5: Solve for x
    x = 737,789,893.41/29,476.69
  6. Step 6: Final answer
    x = 25,029.60

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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.