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Finding the Fourth Proportional to 29,476.20, 40,665.10 and 18,142.26

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Solution

The fourth proportional to 29,476.20, 40,665.10 and 18,142.26 is: 25,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,476.20 : 40,665.10 = 18,142.26 : x
  2. Step 2: Convert to fraction form
    29,476.20/40,665.10 = 18,142.26/x
  3. Step 3: Cross multiply
    29,476.20x = 40,665.10 × 18,142.26
  4. Step 4: Simplify right side
    29,476.20x = 737,756,817.13
  5. Step 5: Solve for x
    x = 737,756,817.13/29,476.20
  6. Step 6: Final answer
    x = 25,028.90

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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.