Home / 20,194.86-27,869.18-11,121.30

Finding the Fourth Proportional to 20,194.86, 27,869.18 and 11,121.30

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Solution

The fourth proportional to 20,194.86, 27,869.18 and 11,121.30 is: 15,347.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,194.86 : 27,869.18 = 11,121.30 : x
  2. Step 2: Convert to fraction form
    20,194.86/27,869.18 = 11,121.30/x
  3. Step 3: Cross multiply
    20,194.86x = 27,869.18 × 11,121.30
  4. Step 4: Simplify right side
    20,194.86x = 309,941,511.53
  5. Step 5: Solve for x
    x = 309,941,511.53/20,194.86
  6. Step 6: Final answer
    x = 15,347.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.