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Finding the Fourth Proportional to 18,649.99, 27,970.71 and 5,322.73

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Solution

The fourth proportional to 18,649.99, 27,970.71 and 5,322.73 is: 7,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.99 : 27,970.71 = 5,322.73 : x
  2. Step 2: Convert to fraction form
    18,649.99/27,970.71 = 5,322.73/x
  3. Step 3: Cross multiply
    18,649.99x = 27,970.71 × 5,322.73
  4. Step 4: Simplify right side
    18,649.99x = 148,880,537.24
  5. Step 5: Solve for x
    x = 148,880,537.24/18,649.99
  6. Step 6: Final answer
    x = 7,982.87

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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.