Home / 13,212.02-18,234.44-8,177.86

Finding the Fourth Proportional to 13,212.02, 18,234.44 and 8,177.86

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Solution

The fourth proportional to 13,212.02, 18,234.44 and 8,177.86 is: 11,286.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.02 : 18,234.44 = 8,177.86 : x
  2. Step 2: Convert to fraction form
    13,212.02/18,234.44 = 8,177.86/x
  3. Step 3: Cross multiply
    13,212.02x = 18,234.44 × 8,177.86
  4. Step 4: Simplify right side
    13,212.02x = 149,118,697.50
  5. Step 5: Solve for x
    x = 149,118,697.50/13,212.02
  6. Step 6: Final answer
    x = 11,286.59

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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.