Home / 20,791.92-31,113.36-19,401.60

Finding the Fourth Proportional to 20,791.92, 31,113.36 and 19,401.60

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Solution

The fourth proportional to 20,791.92, 31,113.36 and 19,401.60 is: 29,032.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.92 : 31,113.36 = 19,401.60 : x
  2. Step 2: Convert to fraction form
    20,791.92/31,113.36 = 19,401.60/x
  3. Step 3: Cross multiply
    20,791.92x = 31,113.36 × 19,401.60
  4. Step 4: Simplify right side
    20,791.92x = 603,648,965.38
  5. Step 5: Solve for x
    x = 603,648,965.38/20,791.92
  6. Step 6: Final answer
    x = 29,032.86

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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.