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Finding the Fourth Proportional to 29,490, 44,131.10 and 18,401.90

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Solution

The fourth proportional to 29,490, 44,131.10 and 18,401.90 is: 27,538.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,490 : 44,131.10 = 18,401.90 : x
  2. Step 2: Convert to fraction form
    29,490/44,131.10 = 18,401.90/x
  3. Step 3: Cross multiply
    29,490x = 44,131.10 × 18,401.90
  4. Step 4: Simplify right side
    29,490x = 812,096,089.09
  5. Step 5: Solve for x
    x = 812,096,089.09/29,490
  6. Step 6: Final answer
    x = 27,538.02

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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.