Home / 20,471.35-30,694.55-7,976.74

Finding the Fourth Proportional to 20,471.35, 30,694.55 and 7,976.74

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Solution

The fourth proportional to 20,471.35, 30,694.55 and 7,976.74 is: 11,960.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.35 : 30,694.55 = 7,976.74 : x
  2. Step 2: Convert to fraction form
    20,471.35/30,694.55 = 7,976.74/x
  3. Step 3: Cross multiply
    20,471.35x = 30,694.55 × 7,976.74
  4. Step 4: Simplify right side
    20,471.35x = 244,842,428.86
  5. Step 5: Solve for x
    x = 244,842,428.86/20,471.35
  6. Step 6: Final answer
    x = 11,960.25

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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.