Home / 20,360.16-30,540.84-7,221.60

Finding the Fourth Proportional to 20,360.16, 30,540.84 and 7,221.60

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Solution

The fourth proportional to 20,360.16, 30,540.84 and 7,221.60 is: 10,832.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.16 : 30,540.84 = 7,221.60 : x
  2. Step 2: Convert to fraction form
    20,360.16/30,540.84 = 7,221.60/x
  3. Step 3: Cross multiply
    20,360.16x = 30,540.84 × 7,221.60
  4. Step 4: Simplify right side
    20,360.16x = 220,553,730.14
  5. Step 5: Solve for x
    x = 220,553,730.14/20,360.16
  6. Step 6: Final answer
    x = 10,832.61

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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.