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Finding the Fourth Proportional to 15,194.96, 20,949.84 and 12,924.08

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Solution

The fourth proportional to 15,194.96, 20,949.84 and 12,924.08 is: 17,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,194.96 : 20,949.84 = 12,924.08 : x
  2. Step 2: Convert to fraction form
    15,194.96/20,949.84 = 12,924.08/x
  3. Step 3: Cross multiply
    15,194.96x = 20,949.84 × 12,924.08
  4. Step 4: Simplify right side
    15,194.96x = 270,757,408.15
  5. Step 5: Solve for x
    x = 270,757,408.15/15,194.96
  6. Step 6: Final answer
    x = 17,818.90

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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.