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Finding the Fourth Proportional to 18,193.70, 27,239.93 and 9,289.79

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Solution

The fourth proportional to 18,193.70, 27,239.93 and 9,289.79 is: 13,908.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,193.70 : 27,239.93 = 9,289.79 : x
  2. Step 2: Convert to fraction form
    18,193.70/27,239.93 = 9,289.79/x
  3. Step 3: Cross multiply
    18,193.70x = 27,239.93 × 9,289.79
  4. Step 4: Simplify right side
    18,193.70x = 253,053,250.97
  5. Step 5: Solve for x
    x = 253,053,250.97/18,193.70
  6. Step 6: Final answer
    x = 13,908.84

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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.