Home / 12,086.06-18,133.20-10,921.50

Finding the Fourth Proportional to 12,086.06, 18,133.20 and 10,921.50

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Solution

The fourth proportional to 12,086.06, 18,133.20 and 10,921.50 is: 16,385.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.06 : 18,133.20 = 10,921.50 : x
  2. Step 2: Convert to fraction form
    12,086.06/18,133.20 = 10,921.50/x
  3. Step 3: Cross multiply
    12,086.06x = 18,133.20 × 10,921.50
  4. Step 4: Simplify right side
    12,086.06x = 198,041,743.80
  5. Step 5: Solve for x
    x = 198,041,743.80/12,086.06
  6. Step 6: Final answer
    x = 16,385.96

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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.