Home / 20,154.40-30,166.80-10,770.91

Finding the Fourth Proportional to 20,154.40, 30,166.80 and 10,770.91

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Solution

The fourth proportional to 20,154.40, 30,166.80 and 10,770.91 is: 16,121.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.40 : 30,166.80 = 10,770.91 : x
  2. Step 2: Convert to fraction form
    20,154.40/30,166.80 = 10,770.91/x
  3. Step 3: Cross multiply
    20,154.40x = 30,166.80 × 10,770.91
  4. Step 4: Simplify right side
    20,154.40x = 324,923,887.79
  5. Step 5: Solve for x
    x = 324,923,887.79/20,154.40
  6. Step 6: Final answer
    x = 16,121.73

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1.5x scale

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.