Home / 21,680.43-32,520.13-9,993.65

Finding the Fourth Proportional to 21,680.43, 32,520.13 and 9,993.65

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Solution

The fourth proportional to 21,680.43, 32,520.13 and 9,993.65 is: 14,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.43 : 32,520.13 = 9,993.65 : x
  2. Step 2: Convert to fraction form
    21,680.43/32,520.13 = 9,993.65/x
  3. Step 3: Cross multiply
    21,680.43x = 32,520.13 × 9,993.65
  4. Step 4: Simplify right side
    21,680.43x = 324,994,665.80
  5. Step 5: Solve for x
    x = 324,994,665.80/21,680.43
  6. Step 6: Final answer
    x = 14,990.23

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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.