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Finding the Fourth Proportional to 11,366.80, 17,066.40 and 8,904.40

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Solution

The fourth proportional to 11,366.80, 17,066.40 and 8,904.40 is: 13,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,366.80 : 17,066.40 = 8,904.40 : x
  2. Step 2: Convert to fraction form
    11,366.80/17,066.40 = 8,904.40/x
  3. Step 3: Cross multiply
    11,366.80x = 17,066.40 × 8,904.40
  4. Step 4: Simplify right side
    11,366.80x = 151,966,052.16
  5. Step 5: Solve for x
    x = 151,966,052.16/11,366.80
  6. Step 6: Final answer
    x = 13,369.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.