Home / 20,196.28-27,870.96-11,243.76

Finding the Fourth Proportional to 20,196.28, 27,870.96 and 11,243.76

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Solution

The fourth proportional to 20,196.28, 27,870.96 and 11,243.76 is: 15,516.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.28 : 27,870.96 = 11,243.76 : x
  2. Step 2: Convert to fraction form
    20,196.28/27,870.96 = 11,243.76/x
  3. Step 3: Cross multiply
    20,196.28x = 27,870.96 × 11,243.76
  4. Step 4: Simplify right side
    20,196.28x = 313,374,385.21
  5. Step 5: Solve for x
    x = 313,374,385.21/20,196.28
  6. Step 6: Final answer
    x = 15,516.44

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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.