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Finding the Fourth Proportional to 15,039.99, 20,754.94 and 8,325.48

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Solution

The fourth proportional to 15,039.99, 20,754.94 and 8,325.48 is: 11,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039.99 : 20,754.94 = 8,325.48 : x
  2. Step 2: Convert to fraction form
    15,039.99/20,754.94 = 8,325.48/x
  3. Step 3: Cross multiply
    15,039.99x = 20,754.94 × 8,325.48
  4. Step 4: Simplify right side
    15,039.99x = 172,794,692.47
  5. Step 5: Solve for x
    x = 172,794,692.47/15,039.99
  6. Step 6: Final answer
    x = 11,489.02

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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.