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Finding the Fourth Proportional to 12,674.01, 18,990.15 and 4,349.47

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Solution

The fourth proportional to 12,674.01, 18,990.15 and 4,349.47 is: 6,517.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.01 : 18,990.15 = 4,349.47 : x
  2. Step 2: Convert to fraction form
    12,674.01/18,990.15 = 4,349.47/x
  3. Step 3: Cross multiply
    12,674.01x = 18,990.15 × 4,349.47
  4. Step 4: Simplify right side
    12,674.01x = 82,597,112.95
  5. Step 5: Solve for x
    x = 82,597,112.95/12,674.01
  6. Step 6: Final answer
    x = 6,517.05

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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.