Home / 13,580.67-20,372.54-12,185.43

Finding the Fourth Proportional to 13,580.67, 20,372.54 and 12,185.43

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Solution

The fourth proportional to 13,580.67, 20,372.54 and 12,185.43 is: 18,279.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.67 : 20,372.54 = 12,185.43 : x
  2. Step 2: Convert to fraction form
    13,580.67/20,372.54 = 12,185.43/x
  3. Step 3: Cross multiply
    13,580.67x = 20,372.54 × 12,185.43
  4. Step 4: Simplify right side
    13,580.67x = 248,248,099.17
  5. Step 5: Solve for x
    x = 248,248,099.17/13,580.67
  6. Step 6: Final answer
    x = 18,279.52

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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.