Home / 13,463.28-18,581.76-11,221.56

Finding the Fourth Proportional to 13,463.28, 18,581.76 and 11,221.56

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Solution

The fourth proportional to 13,463.28, 18,581.76 and 11,221.56 is: 15,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,463.28 : 18,581.76 = 11,221.56 : x
  2. Step 2: Convert to fraction form
    13,463.28/18,581.76 = 11,221.56/x
  3. Step 3: Cross multiply
    13,463.28x = 18,581.76 × 11,221.56
  4. Step 4: Simplify right side
    13,463.28x = 208,516,334.75
  5. Step 5: Solve for x
    x = 208,516,334.75/13,463.28
  6. Step 6: Final answer
    x = 15,487.78

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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.