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Finding the Fourth Proportional to 18,976.66, 26,129.81 and 17,196.68

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Solution

The fourth proportional to 18,976.66, 26,129.81 and 17,196.68 is: 23,678.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,976.66 : 26,129.81 = 17,196.68 : x
  2. Step 2: Convert to fraction form
    18,976.66/26,129.81 = 17,196.68/x
  3. Step 3: Cross multiply
    18,976.66x = 26,129.81 × 17,196.68
  4. Step 4: Simplify right side
    18,976.66x = 449,345,981.03
  5. Step 5: Solve for x
    x = 449,345,981.03/18,976.66
  6. Step 6: Final answer
    x = 23,678.88

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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.