Home / 20,571.66-30,876.93-11,221.02

Finding the Fourth Proportional to 20,571.66, 30,876.93 and 11,221.02

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Solution

The fourth proportional to 20,571.66, 30,876.93 and 11,221.02 is: 16,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.66 : 30,876.93 = 11,221.02 : x
  2. Step 2: Convert to fraction form
    20,571.66/30,876.93 = 11,221.02/x
  3. Step 3: Cross multiply
    20,571.66x = 30,876.93 × 11,221.02
  4. Step 4: Simplify right side
    20,571.66x = 346,470,649.07
  5. Step 5: Solve for x
    x = 346,470,649.07/20,571.66
  6. Step 6: Final answer
    x = 16,842.13

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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.