Home / 20,475.05-30,694.31-7,992.17

Finding the Fourth Proportional to 20,475.05, 30,694.31 and 7,992.17

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Solution

The fourth proportional to 20,475.05, 30,694.31 and 7,992.17 is: 11,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.05 : 30,694.31 = 7,992.17 : x
  2. Step 2: Convert to fraction form
    20,475.05/30,694.31 = 7,992.17/x
  3. Step 3: Cross multiply
    20,475.05x = 30,694.31 × 7,992.17
  4. Step 4: Simplify right side
    20,475.05x = 245,314,095.19
  5. Step 5: Solve for x
    x = 245,314,095.19/20,475.05
  6. Step 6: Final answer
    x = 11,981.13

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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.