Home / 20,879.04-31,325.40-7,732.44

Finding the Fourth Proportional to 20,879.04, 31,325.40 and 7,732.44

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Solution

The fourth proportional to 20,879.04, 31,325.40 and 7,732.44 is: 11,601.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.04 : 31,325.40 = 7,732.44 : x
  2. Step 2: Convert to fraction form
    20,879.04/31,325.40 = 7,732.44/x
  3. Step 3: Cross multiply
    20,879.04x = 31,325.40 × 7,732.44
  4. Step 4: Simplify right side
    20,879.04x = 242,221,775.98
  5. Step 5: Solve for x
    x = 242,221,775.98/20,879.04
  6. Step 6: Final answer
    x = 11,601.19

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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.