Home / 12,171.76-16,793.20-9,611.45

Finding the Fourth Proportional to 12,171.76, 16,793.20 and 9,611.45

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Solution

The fourth proportional to 12,171.76, 16,793.20 and 9,611.45 is: 13,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.76 : 16,793.20 = 9,611.45 : x
  2. Step 2: Convert to fraction form
    12,171.76/16,793.20 = 9,611.45/x
  3. Step 3: Cross multiply
    12,171.76x = 16,793.20 × 9,611.45
  4. Step 4: Simplify right side
    12,171.76x = 161,407,056.14
  5. Step 5: Solve for x
    x = 161,407,056.14/12,171.76
  6. Step 6: Final answer
    x = 13,260.78

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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.