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Finding the Fourth Proportional to 18,877.25, 26,048.59 and 11,219.51

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Solution

The fourth proportional to 18,877.25, 26,048.59 and 11,219.51 is: 15,481.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.25 : 26,048.59 = 11,219.51 : x
  2. Step 2: Convert to fraction form
    18,877.25/26,048.59 = 11,219.51/x
  3. Step 3: Cross multiply
    18,877.25x = 26,048.59 × 11,219.51
  4. Step 4: Simplify right side
    18,877.25x = 292,252,453.06
  5. Step 5: Solve for x
    x = 292,252,453.06/18,877.25
  6. Step 6: Final answer
    x = 15,481.73

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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.