Home / 20,793.92-31,116.36-19,403.60

Finding the Fourth Proportional to 20,793.92, 31,116.36 and 19,403.60

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Solution

The fourth proportional to 20,793.92, 31,116.36 and 19,403.60 is: 29,035.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.92 : 31,116.36 = 19,403.60 : x
  2. Step 2: Convert to fraction form
    20,793.92/31,116.36 = 19,403.60/x
  3. Step 3: Cross multiply
    20,793.92x = 31,116.36 × 19,403.60
  4. Step 4: Simplify right side
    20,793.92x = 603,769,402.90
  5. Step 5: Solve for x
    x = 603,769,402.90/20,793.92
  6. Step 6: Final answer
    x = 29,035.86

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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.