Home / 13,772.24-20,631.80-8,230.02

Finding the Fourth Proportional to 13,772.24, 20,631.80 and 8,230.02

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Solution

The fourth proportional to 13,772.24, 20,631.80 and 8,230.02 is: 12,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.24 : 20,631.80 = 8,230.02 : x
  2. Step 2: Convert to fraction form
    13,772.24/20,631.80 = 8,230.02/x
  3. Step 3: Cross multiply
    13,772.24x = 20,631.80 × 8,230.02
  4. Step 4: Simplify right side
    13,772.24x = 169,800,126.64
  5. Step 5: Solve for x
    x = 169,800,126.64/13,772.24
  6. Step 6: Final answer
    x = 12,329.16

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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.