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Finding the Fourth Proportional to 19,612.88, 27,069.36 and 11,659.60

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Solution

The fourth proportional to 19,612.88, 27,069.36 and 11,659.60 is: 16,092.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,612.88 : 27,069.36 = 11,659.60 : x
  2. Step 2: Convert to fraction form
    19,612.88/27,069.36 = 11,659.60/x
  3. Step 3: Cross multiply
    19,612.88x = 27,069.36 × 11,659.60
  4. Step 4: Simplify right side
    19,612.88x = 315,617,909.86
  5. Step 5: Solve for x
    x = 315,617,909.86/19,612.88
  6. Step 6: Final answer
    x = 16,092.38

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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.