Home / 20,411.62-30,619.37-7,932.61

Finding the Fourth Proportional to 20,411.62, 30,619.37 and 7,932.61

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Solution

The fourth proportional to 20,411.62, 30,619.37 and 7,932.61 is: 11,899.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.62 : 30,619.37 = 7,932.61 : x
  2. Step 2: Convert to fraction form
    20,411.62/30,619.37 = 7,932.61/x
  3. Step 3: Cross multiply
    20,411.62x = 30,619.37 × 7,932.61
  4. Step 4: Simplify right side
    20,411.62x = 242,891,563.89
  5. Step 5: Solve for x
    x = 242,891,563.89/20,411.62
  6. Step 6: Final answer
    x = 11,899.67

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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.