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Finding the Fourth Proportional to 11,360.16, 15,671.97 and 6,642.36

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Solution

The fourth proportional to 11,360.16, 15,671.97 and 6,642.36 is: 9,163.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,360.16 : 15,671.97 = 6,642.36 : x
  2. Step 2: Convert to fraction form
    11,360.16/15,671.97 = 6,642.36/x
  3. Step 3: Cross multiply
    11,360.16x = 15,671.97 × 6,642.36
  4. Step 4: Simplify right side
    11,360.16x = 104,098,866.65
  5. Step 5: Solve for x
    x = 104,098,866.65/11,360.16
  6. Step 6: Final answer
    x = 9,163.50

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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.