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Finding the Fourth Proportional to 29,638.72, 44,408.72 and 20,855.18

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Solution

The fourth proportional to 29,638.72, 44,408.72 and 20,855.18 is: 31,248.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,638.72 : 44,408.72 = 20,855.18 : x
  2. Step 2: Convert to fraction form
    29,638.72/44,408.72 = 20,855.18/x
  3. Step 3: Cross multiply
    29,638.72x = 44,408.72 × 20,855.18
  4. Step 4: Simplify right side
    29,638.72x = 926,152,012.33
  5. Step 5: Solve for x
    x = 926,152,012.33/29,638.72
  6. Step 6: Final answer
    x = 31,248.04

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1.5x scale

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.