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Finding the Fourth Proportional to 11,378.92, 15,701.94 and 6,663.16

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Solution

The fourth proportional to 11,378.92, 15,701.94 and 6,663.16 is: 9,194.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.92 : 15,701.94 = 6,663.16 : x
  2. Step 2: Convert to fraction form
    11,378.92/15,701.94 = 6,663.16/x
  3. Step 3: Cross multiply
    11,378.92x = 15,701.94 × 6,663.16
  4. Step 4: Simplify right side
    11,378.92x = 104,624,538.53
  5. Step 5: Solve for x
    x = 104,624,538.53/11,378.92
  6. Step 6: Final answer
    x = 9,194.59

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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.