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Finding the Fourth Proportional to 15,192.17, 20,964.60 and 8,818.44

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Solution

The fourth proportional to 15,192.17, 20,964.60 and 8,818.44 is: 12,169.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,192.17 : 20,964.60 = 8,818.44 : x
  2. Step 2: Convert to fraction form
    15,192.17/20,964.60 = 8,818.44/x
  3. Step 3: Cross multiply
    15,192.17x = 20,964.60 × 8,818.44
  4. Step 4: Simplify right side
    15,192.17x = 184,875,067.22
  5. Step 5: Solve for x
    x = 184,875,067.22/15,192.17
  6. Step 6: Final answer
    x = 12,169.11

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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.