Home / 20,474.73-30,689.55-7,992.45

Finding the Fourth Proportional to 20,474.73, 30,689.55 and 7,992.45

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Solution

The fourth proportional to 20,474.73, 30,689.55 and 7,992.45 is: 11,979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.73 : 30,689.55 = 7,992.45 : x
  2. Step 2: Convert to fraction form
    20,474.73/30,689.55 = 7,992.45/x
  3. Step 3: Cross multiply
    20,474.73x = 30,689.55 × 7,992.45
  4. Step 4: Simplify right side
    20,474.73x = 245,284,693.90
  5. Step 5: Solve for x
    x = 245,284,693.90/20,474.73
  6. Step 6: Final answer
    x = 11,979.87

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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.