Home / 13,388.75-18,476.96-8,082.54

Finding the Fourth Proportional to 13,388.75, 18,476.96 and 8,082.54

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Solution

The fourth proportional to 13,388.75, 18,476.96 and 8,082.54 is: 11,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.75 : 18,476.96 = 8,082.54 : x
  2. Step 2: Convert to fraction form
    13,388.75/18,476.96 = 8,082.54/x
  3. Step 3: Cross multiply
    13,388.75x = 18,476.96 × 8,082.54
  4. Step 4: Simplify right side
    13,388.75x = 149,340,727.87
  5. Step 5: Solve for x
    x = 149,340,727.87/13,388.75
  6. Step 6: Final answer
    x = 11,154.20

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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.