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Finding the Fourth Proportional to 15,023.73, 20,733.09 and 8,309.49

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Solution

The fourth proportional to 15,023.73, 20,733.09 and 8,309.49 is: 11,467.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,023.73 : 20,733.09 = 8,309.49 : x
  2. Step 2: Convert to fraction form
    15,023.73/20,733.09 = 8,309.49/x
  3. Step 3: Cross multiply
    15,023.73x = 20,733.09 × 8,309.49
  4. Step 4: Simplify right side
    15,023.73x = 172,281,404.02
  5. Step 5: Solve for x
    x = 172,281,404.02/15,023.73
  6. Step 6: Final answer
    x = 11,467.29

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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.