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Finding the Fourth Proportional to 10,928.68, 16,376.42 and 8,008.92

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Solution

The fourth proportional to 10,928.68, 16,376.42 and 8,008.92 is: 12,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.68 : 16,376.42 = 8,008.92 : x
  2. Step 2: Convert to fraction form
    10,928.68/16,376.42 = 8,008.92/x
  3. Step 3: Cross multiply
    10,928.68x = 16,376.42 × 8,008.92
  4. Step 4: Simplify right side
    10,928.68x = 131,157,437.67
  5. Step 5: Solve for x
    x = 131,157,437.67/10,928.68
  6. Step 6: Final answer
    x = 12,001.21

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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.