Home / 21,379-29,503.02-11,948.44

Finding the Fourth Proportional to 21,379, 29,503.02 and 11,948.44

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Solution

The fourth proportional to 21,379, 29,503.02 and 11,948.44 is: 16,488.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379 : 29,503.02 = 11,948.44 : x
  2. Step 2: Convert to fraction form
    21,379/29,503.02 = 11,948.44/x
  3. Step 3: Cross multiply
    21,379x = 29,503.02 × 11,948.44
  4. Step 4: Simplify right side
    21,379x = 352,515,064.29
  5. Step 5: Solve for x
    x = 352,515,064.29/21,379
  6. Step 6: Final answer
    x = 16,488.85

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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.