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Finding the Fourth Proportional to 13,447.53, 20,171.34 and 5,656.32

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Solution

The fourth proportional to 13,447.53, 20,171.34 and 5,656.32 is: 8,484.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.53 : 20,171.34 = 5,656.32 : x
  2. Step 2: Convert to fraction form
    13,447.53/20,171.34 = 5,656.32/x
  3. Step 3: Cross multiply
    13,447.53x = 20,171.34 × 5,656.32
  4. Step 4: Simplify right side
    13,447.53x = 114,095,553.87
  5. Step 5: Solve for x
    x = 114,095,553.87/13,447.53
  6. Step 6: Final answer
    x = 8,484.50

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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.