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Finding the Fourth Proportional to 13,792.59, 20,688.89 and 8,247.53

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Solution

The fourth proportional to 13,792.59, 20,688.89 and 8,247.53 is: 12,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.59 : 20,688.89 = 8,247.53 : x
  2. Step 2: Convert to fraction form
    13,792.59/20,688.89 = 8,247.53/x
  3. Step 3: Cross multiply
    13,792.59x = 20,688.89 × 8,247.53
  4. Step 4: Simplify right side
    13,792.59x = 170,632,251.43
  5. Step 5: Solve for x
    x = 170,632,251.43/13,792.59
  6. Step 6: Final answer
    x = 12,371.30

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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.