Home / 21,302.22-29,397.67-11,871.39

Finding the Fourth Proportional to 21,302.22, 29,397.67 and 11,871.39

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Solution

The fourth proportional to 21,302.22, 29,397.67 and 11,871.39 is: 16,382.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.22 : 29,397.67 = 11,871.39 : x
  2. Step 2: Convert to fraction form
    21,302.22/29,397.67 = 11,871.39/x
  3. Step 3: Cross multiply
    21,302.22x = 29,397.67 × 11,871.39
  4. Step 4: Simplify right side
    21,302.22x = 348,991,205.66
  5. Step 5: Solve for x
    x = 348,991,205.66/21,302.22
  6. Step 6: Final answer
    x = 16,382.86

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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.