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Finding the Fourth Proportional to 18,878.94, 26,050.41 and 10,918.26

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Solution

The fourth proportional to 18,878.94, 26,050.41 and 10,918.26 is: 15,065.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.94 : 26,050.41 = 10,918.26 : x
  2. Step 2: Convert to fraction form
    18,878.94/26,050.41 = 10,918.26/x
  3. Step 3: Cross multiply
    18,878.94x = 26,050.41 × 10,918.26
  4. Step 4: Simplify right side
    18,878.94x = 284,425,149.49
  5. Step 5: Solve for x
    x = 284,425,149.49/18,878.94
  6. Step 6: Final answer
    x = 15,065.74

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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.