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Finding the Fourth Proportional to 18,398.58, 27,604.54 and 11,370.40

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Solution

The fourth proportional to 18,398.58, 27,604.54 and 11,370.40 is: 17,059.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.58 : 27,604.54 = 11,370.40 : x
  2. Step 2: Convert to fraction form
    18,398.58/27,604.54 = 11,370.40/x
  3. Step 3: Cross multiply
    18,398.58x = 27,604.54 × 11,370.40
  4. Step 4: Simplify right side
    18,398.58x = 313,874,661.62
  5. Step 5: Solve for x
    x = 313,874,661.62/18,398.58
  6. Step 6: Final answer
    x = 17,059.72

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1.5x scale

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.