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Finding the Fourth Proportional to 9,893.28, 13,652.60 and 5,416.99

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Solution

The fourth proportional to 9,893.28, 13,652.60 and 5,416.99 is: 7,475.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,893.28 : 13,652.60 = 5,416.99 : x
  2. Step 2: Convert to fraction form
    9,893.28/13,652.60 = 5,416.99/x
  3. Step 3: Cross multiply
    9,893.28x = 13,652.60 × 5,416.99
  4. Step 4: Simplify right side
    9,893.28x = 73,955,997.67
  5. Step 5: Solve for x
    x = 73,955,997.67/9,893.28
  6. Step 6: Final answer
    x = 7,475.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.