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Finding the Fourth Proportional to 11,490.84, 15,836.94 and 9,893.37

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Solution

The fourth proportional to 11,490.84, 15,836.94 and 9,893.37 is: 13,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.84 : 15,836.94 = 9,893.37 : x
  2. Step 2: Convert to fraction form
    11,490.84/15,836.94 = 9,893.37/x
  3. Step 3: Cross multiply
    11,490.84x = 15,836.94 × 9,893.37
  4. Step 4: Simplify right side
    11,490.84x = 156,680,707.09
  5. Step 5: Solve for x
    x = 156,680,707.09/11,490.84
  6. Step 6: Final answer
    x = 13,635.27

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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.