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Finding the Fourth Proportional to 15,038.96, 20,753.09 and 8,324.11

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Solution

The fourth proportional to 15,038.96, 20,753.09 and 8,324.11 is: 11,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,038.96 : 20,753.09 = 8,324.11 : x
  2. Step 2: Convert to fraction form
    15,038.96/20,753.09 = 8,324.11/x
  3. Step 3: Cross multiply
    15,038.96x = 20,753.09 × 8,324.11
  4. Step 4: Simplify right side
    15,038.96x = 172,750,910.50
  5. Step 5: Solve for x
    x = 172,750,910.50/15,038.96
  6. Step 6: Final answer
    x = 11,486.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.