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Finding the Fourth Proportional to 18,392.66, 27,589.06 and 12,192.06

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Solution

The fourth proportional to 18,392.66, 27,589.06 and 12,192.06 is: 18,288.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.66 : 27,589.06 = 12,192.06 : x
  2. Step 2: Convert to fraction form
    18,392.66/27,589.06 = 12,192.06/x
  3. Step 3: Cross multiply
    18,392.66x = 27,589.06 × 12,192.06
  4. Step 4: Simplify right side
    18,392.66x = 336,367,474.86
  5. Step 5: Solve for x
    x = 336,367,474.86/18,392.66
  6. Step 6: Final answer
    x = 18,288.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.