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Finding the Fourth Proportional to 14,618.52, 20,172.06 and 8,649.05

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Solution

The fourth proportional to 14,618.52, 20,172.06 and 8,649.05 is: 11,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,618.52 : 20,172.06 = 8,649.05 : x
  2. Step 2: Convert to fraction form
    14,618.52/20,172.06 = 8,649.05/x
  3. Step 3: Cross multiply
    14,618.52x = 20,172.06 × 8,649.05
  4. Step 4: Simplify right side
    14,618.52x = 174,469,054.68
  5. Step 5: Solve for x
    x = 174,469,054.68/14,618.52
  6. Step 6: Final answer
    x = 11,934.80

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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.