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Finding the Fourth Proportional to 22,216.30, 30,660.39 and 12,659.11

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Solution

The fourth proportional to 22,216.30, 30,660.39 and 12,659.11 is: 17,470.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,216.30 : 30,660.39 = 12,659.11 : x
  2. Step 2: Convert to fraction form
    22,216.30/30,660.39 = 12,659.11/x
  3. Step 3: Cross multiply
    22,216.30x = 30,660.39 × 12,659.11
  4. Step 4: Simplify right side
    22,216.30x = 388,133,173.00
  5. Step 5: Solve for x
    x = 388,133,173.00/22,216.30
  6. Step 6: Final answer
    x = 17,470.65

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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.