Home / 10,388.12-15,581.66-3,813.79

Finding the Fourth Proportional to 10,388.12, 15,581.66 and 3,813.79

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Solution

The fourth proportional to 10,388.12, 15,581.66 and 3,813.79 is: 5,720.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.12 : 15,581.66 = 3,813.79 : x
  2. Step 2: Convert to fraction form
    10,388.12/15,581.66 = 3,813.79/x
  3. Step 3: Cross multiply
    10,388.12x = 15,581.66 × 3,813.79
  4. Step 4: Simplify right side
    10,388.12x = 59,425,179.09
  5. Step 5: Solve for x
    x = 59,425,179.09/10,388.12
  6. Step 6: Final answer
    x = 5,720.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.