Home / 21,212.16-29,272.86-11,780.73

Finding the Fourth Proportional to 21,212.16, 29,272.86 and 11,780.73

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Solution

The fourth proportional to 21,212.16, 29,272.86 and 11,780.73 is: 16,257.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.16 : 29,272.86 = 11,780.73 : x
  2. Step 2: Convert to fraction form
    21,212.16/29,272.86 = 11,780.73/x
  3. Step 3: Cross multiply
    21,212.16x = 29,272.86 × 11,780.73
  4. Step 4: Simplify right side
    21,212.16x = 344,855,491.31
  5. Step 5: Solve for x
    x = 344,855,491.31/21,212.16
  6. Step 6: Final answer
    x = 16,257.44

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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.