Home / 19,455.12-29,135.92-11,109.86

Finding the Fourth Proportional to 19,455.12, 29,135.92 and 11,109.86

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Solution

The fourth proportional to 19,455.12, 29,135.92 and 11,109.86 is: 16,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,455.12 : 29,135.92 = 11,109.86 : x
  2. Step 2: Convert to fraction form
    19,455.12/29,135.92 = 11,109.86/x
  3. Step 3: Cross multiply
    19,455.12x = 29,135.92 × 11,109.86
  4. Step 4: Simplify right side
    19,455.12x = 323,695,992.17
  5. Step 5: Solve for x
    x = 323,695,992.17/19,455.12
  6. Step 6: Final answer
    x = 16,638.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.