Home / 20,475.06-30,694.31-7,992.19

Finding the Fourth Proportional to 20,475.06, 30,694.31 and 7,992.19

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Solution

The fourth proportional to 20,475.06, 30,694.31 and 7,992.19 is: 11,981.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.06 : 30,694.31 = 7,992.19 : x
  2. Step 2: Convert to fraction form
    20,475.06/30,694.31 = 7,992.19/x
  3. Step 3: Cross multiply
    20,475.06x = 30,694.31 × 7,992.19
  4. Step 4: Simplify right side
    20,475.06x = 245,314,613.16
  5. Step 5: Solve for x
    x = 245,314,613.16/20,475.06
  6. Step 6: Final answer
    x = 11,981.14

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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.