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Finding the Fourth Proportional to 13,736.40, 20,603.40 and 4,502.40

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Solution

The fourth proportional to 13,736.40, 20,603.40 and 4,502.40 is: 6,753.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,736.40 : 20,603.40 = 4,502.40 : x
  2. Step 2: Convert to fraction form
    13,736.40/20,603.40 = 4,502.40/x
  3. Step 3: Cross multiply
    13,736.40x = 20,603.40 × 4,502.40
  4. Step 4: Simplify right side
    13,736.40x = 92,764,748.16
  5. Step 5: Solve for x
    x = 92,764,748.16/13,736.40
  6. Step 6: Final answer
    x = 6,753.21

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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.