Home / 15,687.73-21,649.44-8,614.27

Finding the Fourth Proportional to 15,687.73, 21,649.44 and 8,614.27

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Solution

The fourth proportional to 15,687.73, 21,649.44 and 8,614.27 is: 11,887.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687.73 : 21,649.44 = 8,614.27 : x
  2. Step 2: Convert to fraction form
    15,687.73/21,649.44 = 8,614.27/x
  3. Step 3: Cross multiply
    15,687.73x = 21,649.44 × 8,614.27
  4. Step 4: Simplify right side
    15,687.73x = 186,494,121.51
  5. Step 5: Solve for x
    x = 186,494,121.51/15,687.73
  6. Step 6: Final answer
    x = 11,887.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.