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Finding the Fourth Proportional to 13,799.76, 20,683.42 and 7,229.04

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Solution

The fourth proportional to 13,799.76, 20,683.42 and 7,229.04 is: 10,835.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.76 : 20,683.42 = 7,229.04 : x
  2. Step 2: Convert to fraction form
    13,799.76/20,683.42 = 7,229.04/x
  3. Step 3: Cross multiply
    13,799.76x = 20,683.42 × 7,229.04
  4. Step 4: Simplify right side
    13,799.76x = 149,521,270.52
  5. Step 5: Solve for x
    x = 149,521,270.52/13,799.76
  6. Step 6: Final answer
    x = 10,835.06

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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.