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Finding the Fourth Proportional to 18,906.80, 26,063.40 and 12,100.06

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Solution

The fourth proportional to 18,906.80, 26,063.40 and 12,100.06 is: 16,680.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.80 : 26,063.40 = 12,100.06 : x
  2. Step 2: Convert to fraction form
    18,906.80/26,063.40 = 12,100.06/x
  3. Step 3: Cross multiply
    18,906.80x = 26,063.40 × 12,100.06
  4. Step 4: Simplify right side
    18,906.80x = 315,368,781.76
  5. Step 5: Solve for x
    x = 315,368,781.76/18,906.80
  6. Step 6: Final answer
    x = 16,680.18

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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.