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Finding the Fourth Proportional to 11,371.76, 17,055.78 and 8,074.88

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Solution

The fourth proportional to 11,371.76, 17,055.78 and 8,074.88 is: 12,111.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,371.76 : 17,055.78 = 8,074.88 : x
  2. Step 2: Convert to fraction form
    11,371.76/17,055.78 = 8,074.88/x
  3. Step 3: Cross multiply
    11,371.76x = 17,055.78 × 8,074.88
  4. Step 4: Simplify right side
    11,371.76x = 137,723,376.81
  5. Step 5: Solve for x
    x = 137,723,376.81/11,371.76
  6. Step 6: Final answer
    x = 12,111.00

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.