Home / 15,025.99-20,736.23-8,311.75

Finding the Fourth Proportional to 15,025.99, 20,736.23 and 8,311.75

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Solution

The fourth proportional to 15,025.99, 20,736.23 and 8,311.75 is: 11,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.99 : 20,736.23 = 8,311.75 : x
  2. Step 2: Convert to fraction form
    15,025.99/20,736.23 = 8,311.75/x
  3. Step 3: Cross multiply
    15,025.99x = 20,736.23 × 8,311.75
  4. Step 4: Simplify right side
    15,025.99x = 172,354,359.70
  5. Step 5: Solve for x
    x = 172,354,359.70/15,025.99
  6. Step 6: Final answer
    x = 11,470.42

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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.