Home / 13,954.46-20,909.81-11,865.88

Finding the Fourth Proportional to 13,954.46, 20,909.81 and 11,865.88

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Solution

The fourth proportional to 13,954.46, 20,909.81 and 11,865.88 is: 17,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.46 : 20,909.81 = 11,865.88 : x
  2. Step 2: Convert to fraction form
    13,954.46/20,909.81 = 11,865.88/x
  3. Step 3: Cross multiply
    13,954.46x = 20,909.81 × 11,865.88
  4. Step 4: Simplify right side
    13,954.46x = 248,113,234.47
  5. Step 5: Solve for x
    x = 248,113,234.47/13,954.46
  6. Step 6: Final answer
    x = 17,780.21

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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.