Home / 21,134.21-29,165.19-11,702.75

Finding the Fourth Proportional to 21,134.21, 29,165.19 and 11,702.75

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Solution

The fourth proportional to 21,134.21, 29,165.19 and 11,702.75 is: 16,149.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.21 : 29,165.19 = 11,702.75 : x
  2. Step 2: Convert to fraction form
    21,134.21/29,165.19 = 11,702.75/x
  3. Step 3: Cross multiply
    21,134.21x = 29,165.19 × 11,702.75
  4. Step 4: Simplify right side
    21,134.21x = 341,312,927.27
  5. Step 5: Solve for x
    x = 341,312,927.27/21,134.21
  6. Step 6: Final answer
    x = 16,149.78

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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.