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Finding the Fourth Proportional to 13,627.74, 18,808.02 and 8,321.44

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Solution

The fourth proportional to 13,627.74, 18,808.02 and 8,321.44 is: 11,484.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.74 : 18,808.02 = 8,321.44 : x
  2. Step 2: Convert to fraction form
    13,627.74/18,808.02 = 8,321.44/x
  3. Step 3: Cross multiply
    13,627.74x = 18,808.02 × 8,321.44
  4. Step 4: Simplify right side
    13,627.74x = 156,509,809.95
  5. Step 5: Solve for x
    x = 156,509,809.95/13,627.74
  6. Step 6: Final answer
    x = 11,484.65

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1.5x scale

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.