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Finding the Fourth Proportional to 13,342.80, 20,008.80 and 4,573.20

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Solution

The fourth proportional to 13,342.80, 20,008.80 and 4,573.20 is: 6,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.80 : 20,008.80 = 4,573.20 : x
  2. Step 2: Convert to fraction form
    13,342.80/20,008.80 = 4,573.20/x
  3. Step 3: Cross multiply
    13,342.80x = 20,008.80 × 4,573.20
  4. Step 4: Simplify right side
    13,342.80x = 91,504,244.16
  5. Step 5: Solve for x
    x = 91,504,244.16/13,342.80
  6. Step 6: Final answer
    x = 6,857.95

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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.