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Finding the Fourth Proportional to 13,670.87, 20,490.30 and 6,276.04

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Solution

The fourth proportional to 13,670.87, 20,490.30 and 6,276.04 is: 9,406.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.87 : 20,490.30 = 6,276.04 : x
  2. Step 2: Convert to fraction form
    13,670.87/20,490.30 = 6,276.04/x
  3. Step 3: Cross multiply
    13,670.87x = 20,490.30 × 6,276.04
  4. Step 4: Simplify right side
    13,670.87x = 128,597,891.19
  5. Step 5: Solve for x
    x = 128,597,891.19/13,670.87
  6. Step 6: Final answer
    x = 9,406.71

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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.