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Finding the Fourth Proportional to 19,404, 26,779.68 and 11,952

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Solution

The fourth proportional to 19,404, 26,779.68 and 11,952 is: 16,495.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,404 : 26,779.68 = 11,952 : x
  2. Step 2: Convert to fraction form
    19,404/26,779.68 = 11,952/x
  3. Step 3: Cross multiply
    19,404x = 26,779.68 × 11,952
  4. Step 4: Simplify right side
    19,404x = 320,070,735.36
  5. Step 5: Solve for x
    x = 320,070,735.36/19,404
  6. Step 6: Final answer
    x = 16,495.09

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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.