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Finding the Fourth Proportional to 9,916.24, 13,678.32 and 8,227.84

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Solution

The fourth proportional to 9,916.24, 13,678.32 and 8,227.84 is: 11,349.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.24 : 13,678.32 = 8,227.84 : x
  2. Step 2: Convert to fraction form
    9,916.24/13,678.32 = 8,227.84/x
  3. Step 3: Cross multiply
    9,916.24x = 13,678.32 × 8,227.84
  4. Step 4: Simplify right side
    9,916.24x = 112,543,028.43
  5. Step 5: Solve for x
    x = 112,543,028.43/9,916.24
  6. Step 6: Final answer
    x = 11,349.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.