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Finding the Fourth Proportional to 13,201.45, 19,802.19 and 3,967.45

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Solution

The fourth proportional to 13,201.45, 19,802.19 and 3,967.45 is: 5,951.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.45 : 19,802.19 = 3,967.45 : x
  2. Step 2: Convert to fraction form
    13,201.45/19,802.19 = 3,967.45/x
  3. Step 3: Cross multiply
    13,201.45x = 19,802.19 × 3,967.45
  4. Step 4: Simplify right side
    13,201.45x = 78,564,198.72
  5. Step 5: Solve for x
    x = 78,564,198.72/13,201.45
  6. Step 6: Final answer
    x = 5,951.18

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1.5x scale

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.