Home / 20,601.48-28,431.63-11,649.17

Finding the Fourth Proportional to 20,601.48, 28,431.63 and 11,649.17

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Solution

The fourth proportional to 20,601.48, 28,431.63 and 11,649.17 is: 16,076.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.48 : 28,431.63 = 11,649.17 : x
  2. Step 2: Convert to fraction form
    20,601.48/28,431.63 = 11,649.17/x
  3. Step 3: Cross multiply
    20,601.48x = 28,431.63 × 11,649.17
  4. Step 4: Simplify right side
    20,601.48x = 331,204,749.09
  5. Step 5: Solve for x
    x = 331,204,749.09/20,601.48
  6. Step 6: Final answer
    x = 16,076.75

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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.