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Finding the Fourth Proportional to 13,201.80, 19,817.10 and 7,369.80

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Solution

The fourth proportional to 13,201.80, 19,817.10 and 7,369.80 is: 11,062.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.80 : 19,817.10 = 7,369.80 : x
  2. Step 2: Convert to fraction form
    13,201.80/19,817.10 = 7,369.80/x
  3. Step 3: Cross multiply
    13,201.80x = 19,817.10 × 7,369.80
  4. Step 4: Simplify right side
    13,201.80x = 146,048,063.58
  5. Step 5: Solve for x
    x = 146,048,063.58/13,201.80
  6. Step 6: Final answer
    x = 11,062.74

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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.