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Finding the Fourth Proportional to 18,991.26, 26,202.87 and 10,607.58

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Solution

The fourth proportional to 18,991.26, 26,202.87 and 10,607.58 is: 14,635.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.26 : 26,202.87 = 10,607.58 : x
  2. Step 2: Convert to fraction form
    18,991.26/26,202.87 = 10,607.58/x
  3. Step 3: Cross multiply
    18,991.26x = 26,202.87 × 10,607.58
  4. Step 4: Simplify right side
    18,991.26x = 277,949,039.75
  5. Step 5: Solve for x
    x = 277,949,039.75/18,991.26
  6. Step 6: Final answer
    x = 14,635.63

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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.