Home / 20,301.12-30,457.44-7,997.76

Finding the Fourth Proportional to 20,301.12, 30,457.44 and 7,997.76

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Solution

The fourth proportional to 20,301.12, 30,457.44 and 7,997.76 is: 11,998.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.12 : 30,457.44 = 7,997.76 : x
  2. Step 2: Convert to fraction form
    20,301.12/30,457.44 = 7,997.76/x
  3. Step 3: Cross multiply
    20,301.12x = 30,457.44 × 7,997.76
  4. Step 4: Simplify right side
    20,301.12x = 243,591,295.33
  5. Step 5: Solve for x
    x = 243,591,295.33/20,301.12
  6. Step 6: Final answer
    x = 11,998.91

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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.