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Finding the Fourth Proportional to 13,463.72, 20,202.60 and 7,631.72

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Solution

The fourth proportional to 13,463.72, 20,202.60 and 7,631.72 is: 11,451.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,463.72 : 20,202.60 = 7,631.72 : x
  2. Step 2: Convert to fraction form
    13,463.72/20,202.60 = 7,631.72/x
  3. Step 3: Cross multiply
    13,463.72x = 20,202.60 × 7,631.72
  4. Step 4: Simplify right side
    13,463.72x = 154,180,586.47
  5. Step 5: Solve for x
    x = 154,180,586.47/13,463.72
  6. Step 6: Final answer
    x = 11,451.56

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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.