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Finding the Fourth Proportional to 29,903.37, 44,821.53 and 12,129.90

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Solution

The fourth proportional to 29,903.37, 44,821.53 and 12,129.90 is: 18,181.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,903.37 : 44,821.53 = 12,129.90 : x
  2. Step 2: Convert to fraction form
    29,903.37/44,821.53 = 12,129.90/x
  3. Step 3: Cross multiply
    29,903.37x = 44,821.53 × 12,129.90
  4. Step 4: Simplify right side
    29,903.37x = 543,680,676.75
  5. Step 5: Solve for x
    x = 543,680,676.75/29,903.37
  6. Step 6: Final answer
    x = 18,181.25

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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.