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Finding the Fourth Proportional to 18,498.78, 27,736.02 and 8,637.84

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Solution

The fourth proportional to 18,498.78, 27,736.02 and 8,637.84 is: 12,951.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498.78 : 27,736.02 = 8,637.84 : x
  2. Step 2: Convert to fraction form
    18,498.78/27,736.02 = 8,637.84/x
  3. Step 3: Cross multiply
    18,498.78x = 27,736.02 × 8,637.84
  4. Step 4: Simplify right side
    18,498.78x = 239,579,303.00
  5. Step 5: Solve for x
    x = 239,579,303.00/18,498.78
  6. Step 6: Final answer
    x = 12,951.09

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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.