Home / 13,778.68-20,661.24-4,416.50

Finding the Fourth Proportional to 13,778.68, 20,661.24 and 4,416.50

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Solution

The fourth proportional to 13,778.68, 20,661.24 and 4,416.50 is: 6,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.68 : 20,661.24 = 4,416.50 : x
  2. Step 2: Convert to fraction form
    13,778.68/20,661.24 = 4,416.50/x
  3. Step 3: Cross multiply
    13,778.68x = 20,661.24 × 4,416.50
  4. Step 4: Simplify right side
    13,778.68x = 91,250,366.46
  5. Step 5: Solve for x
    x = 91,250,366.46/13,778.68
  6. Step 6: Final answer
    x = 6,622.58

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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.