Home / 21,236.55-29,305.69-11,676.37

Finding the Fourth Proportional to 21,236.55, 29,305.69 and 11,676.37

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Solution

The fourth proportional to 21,236.55, 29,305.69 and 11,676.37 is: 16,112.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.55 : 29,305.69 = 11,676.37 : x
  2. Step 2: Convert to fraction form
    21,236.55/29,305.69 = 11,676.37/x
  3. Step 3: Cross multiply
    21,236.55x = 29,305.69 × 11,676.37
  4. Step 4: Simplify right side
    21,236.55x = 342,184,079.55
  5. Step 5: Solve for x
    x = 342,184,079.55/21,236.55
  6. Step 6: Final answer
    x = 16,112.98

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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.