Home / 21,177.28-29,224.20-11,745.64

Finding the Fourth Proportional to 21,177.28, 29,224.20 and 11,745.64

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Solution

The fourth proportional to 21,177.28, 29,224.20 and 11,745.64 is: 16,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.28 : 29,224.20 = 11,745.64 : x
  2. Step 2: Convert to fraction form
    21,177.28/29,224.20 = 11,745.64/x
  3. Step 3: Cross multiply
    21,177.28x = 29,224.20 × 11,745.64
  4. Step 4: Simplify right side
    21,177.28x = 343,256,932.49
  5. Step 5: Solve for x
    x = 343,256,932.49/21,177.28
  6. Step 6: Final answer
    x = 16,208.74

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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.