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Finding the Fourth Proportional to 18,483.98, 27,728.28 and 7,237.87

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Solution

The fourth proportional to 18,483.98, 27,728.28 and 7,237.87 is: 10,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.98 : 27,728.28 = 7,237.87 : x
  2. Step 2: Convert to fraction form
    18,483.98/27,728.28 = 7,237.87/x
  3. Step 3: Cross multiply
    18,483.98x = 27,728.28 × 7,237.87
  4. Step 4: Simplify right side
    18,483.98x = 200,693,649.77
  5. Step 5: Solve for x
    x = 200,693,649.77/18,483.98
  6. Step 6: Final answer
    x = 10,857.71

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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.