Home / 15,021.22-20,727.44-8,305.92

Finding the Fourth Proportional to 15,021.22, 20,727.44 and 8,305.92

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Solution

The fourth proportional to 15,021.22, 20,727.44 and 8,305.92 is: 11,461.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.22 : 20,727.44 = 8,305.92 : x
  2. Step 2: Convert to fraction form
    15,021.22/20,727.44 = 8,305.92/x
  3. Step 3: Cross multiply
    15,021.22x = 20,727.44 × 8,305.92
  4. Step 4: Simplify right side
    15,021.22x = 172,160,458.44
  5. Step 5: Solve for x
    x = 172,160,458.44/15,021.22
  6. Step 6: Final answer
    x = 11,461.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.