Home / 13,311.56-18,367.66-8,535.68

Finding the Fourth Proportional to 13,311.56, 18,367.66 and 8,535.68

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Solution

The fourth proportional to 13,311.56, 18,367.66 and 8,535.68 is: 11,777.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.56 : 18,367.66 = 8,535.68 : x
  2. Step 2: Convert to fraction form
    13,311.56/18,367.66 = 8,535.68/x
  3. Step 3: Cross multiply
    13,311.56x = 18,367.66 × 8,535.68
  4. Step 4: Simplify right side
    13,311.56x = 156,780,468.11
  5. Step 5: Solve for x
    x = 156,780,468.11/13,311.56
  6. Step 6: Final answer
    x = 11,777.77

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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.