Home / 13,618.24-18,793.90-8,311.50

Finding the Fourth Proportional to 13,618.24, 18,793.90 and 8,311.50

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Solution

The fourth proportional to 13,618.24, 18,793.90 and 8,311.50 is: 11,470.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.24 : 18,793.90 = 8,311.50 : x
  2. Step 2: Convert to fraction form
    13,618.24/18,793.90 = 8,311.50/x
  3. Step 3: Cross multiply
    13,618.24x = 18,793.90 × 8,311.50
  4. Step 4: Simplify right side
    13,618.24x = 156,205,499.85
  5. Step 5: Solve for x
    x = 156,205,499.85/13,618.24
  6. Step 6: Final answer
    x = 11,470.31

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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.