Home / 20,099.80-30,141.97-9,561.70

Finding the Fourth Proportional to 20,099.80, 30,141.97 and 9,561.70

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Solution

The fourth proportional to 20,099.80, 30,141.97 and 9,561.70 is: 14,338.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.80 : 30,141.97 = 9,561.70 : x
  2. Step 2: Convert to fraction form
    20,099.80/30,141.97 = 9,561.70/x
  3. Step 3: Cross multiply
    20,099.80x = 30,141.97 × 9,561.70
  4. Step 4: Simplify right side
    20,099.80x = 288,208,474.55
  5. Step 5: Solve for x
    x = 288,208,474.55/20,099.80
  6. Step 6: Final answer
    x = 14,338.87

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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.