Home / 21,267.21-29,349.72-11,835.75

Finding the Fourth Proportional to 21,267.21, 29,349.72 and 11,835.75

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Solution

The fourth proportional to 21,267.21, 29,349.72 and 11,835.75 is: 16,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.21 : 29,349.72 = 11,835.75 : x
  2. Step 2: Convert to fraction form
    21,267.21/29,349.72 = 11,835.75/x
  3. Step 3: Cross multiply
    21,267.21x = 29,349.72 × 11,835.75
  4. Step 4: Simplify right side
    21,267.21x = 347,375,948.49
  5. Step 5: Solve for x
    x = 347,375,948.49/21,267.21
  6. Step 6: Final answer
    x = 16,333.87

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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.