Home / 20,832.54-31,245.45-7,691.10

Finding the Fourth Proportional to 20,832.54, 31,245.45 and 7,691.10

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Solution

The fourth proportional to 20,832.54, 31,245.45 and 7,691.10 is: 11,535.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.54 : 31,245.45 = 7,691.10 : x
  2. Step 2: Convert to fraction form
    20,832.54/31,245.45 = 7,691.10/x
  3. Step 3: Cross multiply
    20,832.54x = 31,245.45 × 7,691.10
  4. Step 4: Simplify right side
    20,832.54x = 240,311,880.50
  5. Step 5: Solve for x
    x = 240,311,880.50/20,832.54
  6. Step 6: Final answer
    x = 11,535.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.