Home / 20,196.86-27,871.94-11,123.30

Finding the Fourth Proportional to 20,196.86, 27,871.94 and 11,123.30

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Solution

The fourth proportional to 20,196.86, 27,871.94 and 11,123.30 is: 15,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.86 : 27,871.94 = 11,123.30 : x
  2. Step 2: Convert to fraction form
    20,196.86/27,871.94 = 11,123.30/x
  3. Step 3: Cross multiply
    20,196.86x = 27,871.94 × 11,123.30
  4. Step 4: Simplify right side
    20,196.86x = 310,027,950.20
  5. Step 5: Solve for x
    x = 310,027,950.20/20,196.86
  6. Step 6: Final answer
    x = 15,350.30

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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.