Home / 21,379.33-29,503.28-11,819.47

Finding the Fourth Proportional to 21,379.33, 29,503.28 and 11,819.47

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Solution

The fourth proportional to 21,379.33, 29,503.28 and 11,819.47 is: 16,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.33 : 29,503.28 = 11,819.47 : x
  2. Step 2: Convert to fraction form
    21,379.33/29,503.28 = 11,819.47/x
  3. Step 3: Cross multiply
    21,379.33x = 29,503.28 × 11,819.47
  4. Step 4: Simplify right side
    21,379.33x = 348,712,926.25
  5. Step 5: Solve for x
    x = 348,712,926.25/21,379.33
  6. Step 6: Final answer
    x = 16,310.75

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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.