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Finding the Fourth Proportional to 18,683.70, 28,025.55 and 17,711.70

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Solution

The fourth proportional to 18,683.70, 28,025.55 and 17,711.70 is: 26,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.70 : 28,025.55 = 17,711.70 : x
  2. Step 2: Convert to fraction form
    18,683.70/28,025.55 = 17,711.70/x
  3. Step 3: Cross multiply
    18,683.70x = 28,025.55 × 17,711.70
  4. Step 4: Simplify right side
    18,683.70x = 496,380,133.94
  5. Step 5: Solve for x
    x = 496,380,133.94/18,683.70
  6. Step 6: Final answer
    x = 26,567.55

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Similar ratio
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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.