Home / 13,458.24-20,188.32-4,224

Finding the Fourth Proportional to 13,458.24, 20,188.32 and 4,224

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Solution

The fourth proportional to 13,458.24, 20,188.32 and 4,224 is: 6,336.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.24 : 20,188.32 = 4,224 : x
  2. Step 2: Convert to fraction form
    13,458.24/20,188.32 = 4,224/x
  3. Step 3: Cross multiply
    13,458.24x = 20,188.32 × 4,224
  4. Step 4: Simplify right side
    13,458.24x = 85,275,463.68
  5. Step 5: Solve for x
    x = 85,275,463.68/13,458.24
  6. Step 6: Final answer
    x = 6,336.30

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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.