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Finding the Fourth Proportional to 18,498.78, 27,698.96 and 14,455.86

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Solution

The fourth proportional to 18,498.78, 27,698.96 and 14,455.86 is: 21,645.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498.78 : 27,698.96 = 14,455.86 : x
  2. Step 2: Convert to fraction form
    18,498.78/27,698.96 = 14,455.86/x
  3. Step 3: Cross multiply
    18,498.78x = 27,698.96 × 14,455.86
  4. Step 4: Simplify right side
    18,498.78x = 400,412,215.63
  5. Step 5: Solve for x
    x = 400,412,215.63/18,498.78
  6. Step 6: Final answer
    x = 21,645.33

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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.