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Finding the Fourth Proportional to 12,249.56, 16,912.50 and 9,411.86

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Solution

The fourth proportional to 12,249.56, 16,912.50 and 9,411.86 is: 12,994.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249.56 : 16,912.50 = 9,411.86 : x
  2. Step 2: Convert to fraction form
    12,249.56/16,912.50 = 9,411.86/x
  3. Step 3: Cross multiply
    12,249.56x = 16,912.50 × 9,411.86
  4. Step 4: Simplify right side
    12,249.56x = 159,178,082.25
  5. Step 5: Solve for x
    x = 159,178,082.25/12,249.56
  6. Step 6: Final answer
    x = 12,994.60

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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.