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Finding the Fourth Proportional to 15,415.56, 21,273.44 and 8,342.10

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Solution

The fourth proportional to 15,415.56, 21,273.44 and 8,342.10 is: 11,512.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.56 : 21,273.44 = 8,342.10 : x
  2. Step 2: Convert to fraction form
    15,415.56/21,273.44 = 8,342.10/x
  3. Step 3: Cross multiply
    15,415.56x = 21,273.44 × 8,342.10
  4. Step 4: Simplify right side
    15,415.56x = 177,465,122.11
  5. Step 5: Solve for x
    x = 177,465,122.11/15,415.56
  6. Step 6: Final answer
    x = 11,512.08

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