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Finding the Fourth Proportional to 29,486.16, 44,243.40 and 18,390

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Solution

The fourth proportional to 29,486.16, 44,243.40 and 18,390 is: 27,593.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,486.16 : 44,243.40 = 18,390 : x
  2. Step 2: Convert to fraction form
    29,486.16/44,243.40 = 18,390/x
  3. Step 3: Cross multiply
    29,486.16x = 44,243.40 × 18,390
  4. Step 4: Simplify right side
    29,486.16x = 813,636,126
  5. Step 5: Solve for x
    x = 813,636,126/29,486.16
  6. Step 6: Final answer
    x = 27,593.83

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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.