Home / 21,212.28-29,273.67-11,780.84

Finding the Fourth Proportional to 21,212.28, 29,273.67 and 11,780.84

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Solution

The fourth proportional to 21,212.28, 29,273.67 and 11,780.84 is: 16,257.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.28 : 29,273.67 = 11,780.84 : x
  2. Step 2: Convert to fraction form
    21,212.28/29,273.67 = 11,780.84/x
  3. Step 3: Cross multiply
    21,212.28x = 29,273.67 × 11,780.84
  4. Step 4: Simplify right side
    21,212.28x = 344,868,495.67
  5. Step 5: Solve for x
    x = 344,868,495.67/21,212.28
  6. Step 6: Final answer
    x = 16,257.96

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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.