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Finding the Fourth Proportional to 15,965.44, 22,034.92 and 12,181.44

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Solution

The fourth proportional to 15,965.44, 22,034.92 and 12,181.44 is: 16,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,965.44 : 22,034.92 = 12,181.44 : x
  2. Step 2: Convert to fraction form
    15,965.44/22,034.92 = 12,181.44/x
  3. Step 3: Cross multiply
    15,965.44x = 22,034.92 × 12,181.44
  4. Step 4: Simplify right side
    15,965.44x = 268,417,055.88
  5. Step 5: Solve for x
    x = 268,417,055.88/15,965.44
  6. Step 6: Final answer
    x = 16,812.38

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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.