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Finding the Fourth Proportional to 19,791.03, 29,679.11 and 6,460.91

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Solution

The fourth proportional to 19,791.03, 29,679.11 and 6,460.91 is: 9,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.03 : 29,679.11 = 6,460.91 : x
  2. Step 2: Convert to fraction form
    19,791.03/29,679.11 = 6,460.91/x
  3. Step 3: Cross multiply
    19,791.03x = 29,679.11 × 6,460.91
  4. Step 4: Simplify right side
    19,791.03x = 191,754,180.36
  5. Step 5: Solve for x
    x = 191,754,180.36/19,791.03
  6. Step 6: Final answer
    x = 9,688.94

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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.