Home / 13,327.67-18,469.99-13,139.75

Finding the Fourth Proportional to 13,327.67, 18,469.99 and 13,139.75

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Solution

The fourth proportional to 13,327.67, 18,469.99 and 13,139.75 is: 18,209.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327.67 : 18,469.99 = 13,139.75 : x
  2. Step 2: Convert to fraction form
    13,327.67/18,469.99 = 13,139.75/x
  3. Step 3: Cross multiply
    13,327.67x = 18,469.99 × 13,139.75
  4. Step 4: Simplify right side
    13,327.67x = 242,690,985.40
  5. Step 5: Solve for x
    x = 242,690,985.40/13,327.67
  6. Step 6: Final answer
    x = 18,209.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.