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Finding the Fourth Proportional to 12,353.64, 18,548.92 and 12,169.11

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Solution

The fourth proportional to 12,353.64, 18,548.92 and 12,169.11 is: 18,271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353.64 : 18,548.92 = 12,169.11 : x
  2. Step 2: Convert to fraction form
    12,353.64/18,548.92 = 12,169.11/x
  3. Step 3: Cross multiply
    12,353.64x = 18,548.92 × 12,169.11
  4. Step 4: Simplify right side
    12,353.64x = 225,723,847.86
  5. Step 5: Solve for x
    x = 225,723,847.86/12,353.64
  6. Step 6: Final answer
    x = 18,271.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.