Home / 20,992.13-31,475.43-8,501.93

Finding the Fourth Proportional to 20,992.13, 31,475.43 and 8,501.93

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Solution

The fourth proportional to 20,992.13, 31,475.43 and 8,501.93 is: 12,747.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.13 : 31,475.43 = 8,501.93 : x
  2. Step 2: Convert to fraction form
    20,992.13/31,475.43 = 8,501.93/x
  3. Step 3: Cross multiply
    20,992.13x = 31,475.43 × 8,501.93
  4. Step 4: Simplify right side
    20,992.13x = 267,601,745.20
  5. Step 5: Solve for x
    x = 267,601,745.20/20,992.13
  6. Step 6: Final answer
    x = 12,747.72

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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.