Home / 13,720.34-20,580.57-3,332.09

Finding the Fourth Proportional to 13,720.34, 20,580.57 and 3,332.09

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Solution

The fourth proportional to 13,720.34, 20,580.57 and 3,332.09 is: 4,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.34 : 20,580.57 = 3,332.09 : x
  2. Step 2: Convert to fraction form
    13,720.34/20,580.57 = 3,332.09/x
  3. Step 3: Cross multiply
    13,720.34x = 20,580.57 × 3,332.09
  4. Step 4: Simplify right side
    13,720.34x = 68,576,311.49
  5. Step 5: Solve for x
    x = 68,576,311.49/13,720.34
  6. Step 6: Final answer
    x = 4,998.15

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1.5x scale

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.