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Finding the Fourth Proportional to 19,611.92, 27,064.32 and 11,228.42

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Solution

The fourth proportional to 19,611.92, 27,064.32 and 11,228.42 is: 15,495.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.92 : 27,064.32 = 11,228.42 : x
  2. Step 2: Convert to fraction form
    19,611.92/27,064.32 = 11,228.42/x
  3. Step 3: Cross multiply
    19,611.92x = 27,064.32 × 11,228.42
  4. Step 4: Simplify right side
    19,611.92x = 303,889,551.97
  5. Step 5: Solve for x
    x = 303,889,551.97/19,611.92
  6. Step 6: Final answer
    x = 15,495.15

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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.