Home / 13,765.43-20,645.21-3,904.81

Finding the Fourth Proportional to 13,765.43, 20,645.21 and 3,904.81

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Solution

The fourth proportional to 13,765.43, 20,645.21 and 3,904.81 is: 5,856.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.43 : 20,645.21 = 3,904.81 : x
  2. Step 2: Convert to fraction form
    13,765.43/20,645.21 = 3,904.81/x
  3. Step 3: Cross multiply
    13,765.43x = 20,645.21 × 3,904.81
  4. Step 4: Simplify right side
    13,765.43x = 80,615,580.61
  5. Step 5: Solve for x
    x = 80,615,580.61/13,765.43
  6. Step 6: Final answer
    x = 5,856.38

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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.