Home / 13,720.38-20,580.42-3,332.14

Finding the Fourth Proportional to 13,720.38, 20,580.42 and 3,332.14

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Solution

The fourth proportional to 13,720.38, 20,580.42 and 3,332.14 is: 4,998.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.38 : 20,580.42 = 3,332.14 : x
  2. Step 2: Convert to fraction form
    13,720.38/20,580.42 = 3,332.14/x
  3. Step 3: Cross multiply
    13,720.38x = 20,580.42 × 3,332.14
  4. Step 4: Simplify right side
    13,720.38x = 68,576,840.70
  5. Step 5: Solve for x
    x = 68,576,840.70/13,720.38
  6. Step 6: Final answer
    x = 4,998.17

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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.