Home / 13,665.20-18,851.30-11,773.50

Finding the Fourth Proportional to 13,665.20, 18,851.30 and 11,773.50

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Solution

The fourth proportional to 13,665.20, 18,851.30 and 11,773.50 is: 16,241.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.20 : 18,851.30 = 11,773.50 : x
  2. Step 2: Convert to fraction form
    13,665.20/18,851.30 = 11,773.50/x
  3. Step 3: Cross multiply
    13,665.20x = 18,851.30 × 11,773.50
  4. Step 4: Simplify right side
    13,665.20x = 221,945,780.55
  5. Step 5: Solve for x
    x = 221,945,780.55/13,665.20
  6. Step 6: Final answer
    x = 16,241.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.