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Finding the Fourth Proportional to 18,199.80, 27,283.46 and 7,103.91

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Solution

The fourth proportional to 18,199.80, 27,283.46 and 7,103.91 is: 10,649.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,199.80 : 27,283.46 = 7,103.91 : x
  2. Step 2: Convert to fraction form
    18,199.80/27,283.46 = 7,103.91/x
  3. Step 3: Cross multiply
    18,199.80x = 27,283.46 × 7,103.91
  4. Step 4: Simplify right side
    18,199.80x = 193,819,244.33
  5. Step 5: Solve for x
    x = 193,819,244.33/18,199.80
  6. Step 6: Final answer
    x = 10,649.53

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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.