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Finding the Fourth Proportional to 18,656.97, 27,989.64 and 9,898.04

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Solution

The fourth proportional to 18,656.97, 27,989.64 and 9,898.04 is: 14,849.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.97 : 27,989.64 = 9,898.04 : x
  2. Step 2: Convert to fraction form
    18,656.97/27,989.64 = 9,898.04/x
  3. Step 3: Cross multiply
    18,656.97x = 27,989.64 × 9,898.04
  4. Step 4: Simplify right side
    18,656.97x = 277,042,436.36
  5. Step 5: Solve for x
    x = 277,042,436.36/18,656.97
  6. Step 6: Final answer
    x = 14,849.27

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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.