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Finding the Fourth Proportional to 18,792.26, 28,191.62 and 6,313.47

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Solution

The fourth proportional to 18,792.26, 28,191.62 and 6,313.47 is: 9,471.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.26 : 28,191.62 = 6,313.47 : x
  2. Step 2: Convert to fraction form
    18,792.26/28,191.62 = 6,313.47/x
  3. Step 3: Cross multiply
    18,792.26x = 28,191.62 × 6,313.47
  4. Step 4: Simplify right side
    18,792.26x = 177,986,915.55
  5. Step 5: Solve for x
    x = 177,986,915.55/18,792.26
  6. Step 6: Final answer
    x = 9,471.29

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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.