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Finding the Fourth Proportional to 16,636.88, 22,978.68 and 12,153.44

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Solution

The fourth proportional to 16,636.88, 22,978.68 and 12,153.44 is: 16,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,636.88 : 22,978.68 = 12,153.44 : x
  2. Step 2: Convert to fraction form
    16,636.88/22,978.68 = 12,153.44/x
  3. Step 3: Cross multiply
    16,636.88x = 22,978.68 × 12,153.44
  4. Step 4: Simplify right side
    16,636.88x = 279,270,008.66
  5. Step 5: Solve for x
    x = 279,270,008.66/16,636.88
  6. Step 6: Final answer
    x = 16,786.20

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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.