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Finding the Fourth Proportional to 13,001.92, 19,491.03 and 4,679.98

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Solution

The fourth proportional to 13,001.92, 19,491.03 and 4,679.98 is: 7,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.92 : 19,491.03 = 4,679.98 : x
  2. Step 2: Convert to fraction form
    13,001.92/19,491.03 = 4,679.98/x
  3. Step 3: Cross multiply
    13,001.92x = 19,491.03 × 4,679.98
  4. Step 4: Simplify right side
    13,001.92x = 91,217,581.85
  5. Step 5: Solve for x
    x = 91,217,581.85/13,001.92
  6. Step 6: Final answer
    x = 7,015.70

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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.