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Finding the Fourth Proportional to 18,208, 27,103.52 and 17,358.40

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Solution

The fourth proportional to 18,208, 27,103.52 and 17,358.40 is: 25,838.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,208 : 27,103.52 = 17,358.40 : x
  2. Step 2: Convert to fraction form
    18,208/27,103.52 = 17,358.40/x
  3. Step 3: Cross multiply
    18,208x = 27,103.52 × 17,358.40
  4. Step 4: Simplify right side
    18,208x = 470,473,741.57
  5. Step 5: Solve for x
    x = 470,473,741.57/18,208
  6. Step 6: Final answer
    x = 25,838.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.