Home / 18,769.80-28,151.26-6,921

Finding the Fourth Proportional to 18,769.80, 28,151.26 and 6,921

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Solution

The fourth proportional to 18,769.80, 28,151.26 and 6,921 is: 10,380.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769.80 : 28,151.26 = 6,921 : x
  2. Step 2: Convert to fraction form
    18,769.80/28,151.26 = 6,921/x
  3. Step 3: Cross multiply
    18,769.80x = 28,151.26 × 6,921
  4. Step 4: Simplify right side
    18,769.80x = 194,834,870.46
  5. Step 5: Solve for x
    x = 194,834,870.46/18,769.80
  6. Step 6: Final answer
    x = 10,380.23

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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.