Home / 13,245.27-18,286.50-8,772.86

Finding the Fourth Proportional to 13,245.27, 18,286.50 and 8,772.86

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Solution

The fourth proportional to 13,245.27, 18,286.50 and 8,772.86 is: 12,111.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.27 : 18,286.50 = 8,772.86 : x
  2. Step 2: Convert to fraction form
    13,245.27/18,286.50 = 8,772.86/x
  3. Step 3: Cross multiply
    13,245.27x = 18,286.50 × 8,772.86
  4. Step 4: Simplify right side
    13,245.27x = 160,424,812.96
  5. Step 5: Solve for x
    x = 160,424,812.96/13,245.27
  6. Step 6: Final answer
    x = 12,111.86

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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.