Home / 18,913.56-26,105.31-10,954.50

Finding the Fourth Proportional to 18,913.56, 26,105.31 and 10,954.50

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Solution

The fourth proportional to 18,913.56, 26,105.31 and 10,954.50 is: 15,119.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.56 : 26,105.31 = 10,954.50 : x
  2. Step 2: Convert to fraction form
    18,913.56/26,105.31 = 10,954.50/x
  3. Step 3: Cross multiply
    18,913.56x = 26,105.31 × 10,954.50
  4. Step 4: Simplify right side
    18,913.56x = 285,970,618.40
  5. Step 5: Solve for x
    x = 285,970,618.40/18,913.56
  6. Step 6: Final answer
    x = 15,119.87

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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.