Home / 20,775.23-31,162.85-5,192.86

Finding the Fourth Proportional to 20,775.23, 31,162.85 and 5,192.86

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Solution

The fourth proportional to 20,775.23, 31,162.85 and 5,192.86 is: 7,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.23 : 31,162.85 = 5,192.86 : x
  2. Step 2: Convert to fraction form
    20,775.23/31,162.85 = 5,192.86/x
  3. Step 3: Cross multiply
    20,775.23x = 31,162.85 × 5,192.86
  4. Step 4: Simplify right side
    20,775.23x = 161,824,305.89
  5. Step 5: Solve for x
    x = 161,824,305.89/20,775.23
  6. Step 6: Final answer
    x = 7,789.29

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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.