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Finding the Fourth Proportional to 20,737.68, 31,083.48 and 8,254.44

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Solution

The fourth proportional to 20,737.68, 31,083.48 and 8,254.44 is: 12,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.68 : 31,083.48 = 8,254.44 : x
  2. Step 2: Convert to fraction form
    20,737.68/31,083.48 = 8,254.44/x
  3. Step 3: Cross multiply
    20,737.68x = 31,083.48 × 8,254.44
  4. Step 4: Simplify right side
    20,737.68x = 256,576,720.65
  5. Step 5: Solve for x
    x = 256,576,720.65/20,737.68
  6. Step 6: Final answer
    x = 12,372.49

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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.