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Finding the Fourth Proportional to 10,808.17, 14,905.57 and 9,220.54

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Solution

The fourth proportional to 10,808.17, 14,905.57 and 9,220.54 is: 12,716.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.17 : 14,905.57 = 9,220.54 : x
  2. Step 2: Convert to fraction form
    10,808.17/14,905.57 = 9,220.54/x
  3. Step 3: Cross multiply
    10,808.17x = 14,905.57 × 9,220.54
  4. Step 4: Simplify right side
    10,808.17x = 137,437,358.31
  5. Step 5: Solve for x
    x = 137,437,358.31/10,808.17
  6. Step 6: Final answer
    x = 12,716.07

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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.