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Finding the Fourth Proportional to 14,768.61, 20,380.30 and 8,054.38

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Solution

The fourth proportional to 14,768.61, 20,380.30 and 8,054.38 is: 11,114.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,768.61 : 20,380.30 = 8,054.38 : x
  2. Step 2: Convert to fraction form
    14,768.61/20,380.30 = 8,054.38/x
  3. Step 3: Cross multiply
    14,768.61x = 20,380.30 × 8,054.38
  4. Step 4: Simplify right side
    14,768.61x = 164,150,680.71
  5. Step 5: Solve for x
    x = 164,150,680.71/14,768.61
  6. Step 6: Final answer
    x = 11,114.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.