Home / 13,180.20-19,748.70-12,402.60

Finding the Fourth Proportional to 13,180.20, 19,748.70 and 12,402.60

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Solution

The fourth proportional to 13,180.20, 19,748.70 and 12,402.60 is: 18,583.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.20 : 19,748.70 = 12,402.60 : x
  2. Step 2: Convert to fraction form
    13,180.20/19,748.70 = 12,402.60/x
  3. Step 3: Cross multiply
    13,180.20x = 19,748.70 × 12,402.60
  4. Step 4: Simplify right side
    13,180.20x = 244,935,226.62
  5. Step 5: Solve for x
    x = 244,935,226.62/13,180.20
  6. Step 6: Final answer
    x = 18,583.57

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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.