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Finding the Fourth Proportional to 18,878.25, 26,051.46 and 10,380.39

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Solution

The fourth proportional to 18,878.25, 26,051.46 and 10,380.39 is: 14,324.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.25 : 26,051.46 = 10,380.39 : x
  2. Step 2: Convert to fraction form
    18,878.25/26,051.46 = 10,380.39/x
  3. Step 3: Cross multiply
    18,878.25x = 26,051.46 × 10,380.39
  4. Step 4: Simplify right side
    18,878.25x = 270,424,178.25
  5. Step 5: Solve for x
    x = 270,424,178.25/18,878.25
  6. Step 6: Final answer
    x = 14,324.64

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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.