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Finding the Fourth Proportional to 13,605.48, 20,414.06 and 7,369.88

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Solution

The fourth proportional to 13,605.48, 20,414.06 and 7,369.88 is: 11,057.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.48 : 20,414.06 = 7,369.88 : x
  2. Step 2: Convert to fraction form
    13,605.48/20,414.06 = 7,369.88/x
  3. Step 3: Cross multiply
    13,605.48x = 20,414.06 × 7,369.88
  4. Step 4: Simplify right side
    13,605.48x = 150,449,172.51
  5. Step 5: Solve for x
    x = 150,449,172.51/13,605.48
  6. Step 6: Final answer
    x = 11,057.98

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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.