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Finding the Fourth Proportional to 18,793.05, 28,185.02 and 6,140.35

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Solution

The fourth proportional to 18,793.05, 28,185.02 and 6,140.35 is: 9,209.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.05 : 28,185.02 = 6,140.35 : x
  2. Step 2: Convert to fraction form
    18,793.05/28,185.02 = 6,140.35/x
  3. Step 3: Cross multiply
    18,793.05x = 28,185.02 × 6,140.35
  4. Step 4: Simplify right side
    18,793.05x = 173,065,715.93
  5. Step 5: Solve for x
    x = 173,065,715.93/18,793.05
  6. Step 6: Final answer
    x = 9,209.03

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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.