Home / 20,992.22-31,487.28-5,197.16

Finding the Fourth Proportional to 20,992.22, 31,487.28 and 5,197.16

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Solution

The fourth proportional to 20,992.22, 31,487.28 and 5,197.16 is: 7,795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.22 : 31,487.28 = 5,197.16 : x
  2. Step 2: Convert to fraction form
    20,992.22/31,487.28 = 5,197.16/x
  3. Step 3: Cross multiply
    20,992.22x = 31,487.28 × 5,197.16
  4. Step 4: Simplify right side
    20,992.22x = 163,644,432.12
  5. Step 5: Solve for x
    x = 163,644,432.12/20,992.22
  6. Step 6: Final answer
    x = 7,795.48

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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.