Home / 21,212.01-29,272.64-11,780.57

Finding the Fourth Proportional to 21,212.01, 29,272.64 and 11,780.57

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Solution

The fourth proportional to 21,212.01, 29,272.64 and 11,780.57 is: 16,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.01 : 29,272.64 = 11,780.57 : x
  2. Step 2: Convert to fraction form
    21,212.01/29,272.64 = 11,780.57/x
  3. Step 3: Cross multiply
    21,212.01x = 29,272.64 × 11,780.57
  4. Step 4: Simplify right side
    21,212.01x = 344,848,384.60
  5. Step 5: Solve for x
    x = 344,848,384.60/21,212.01
  6. Step 6: Final answer
    x = 16,257.22

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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.