Home / 18,831.09-28,201.72-10,490.43

Finding the Fourth Proportional to 18,831.09, 28,201.72 and 10,490.43

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Solution

The fourth proportional to 18,831.09, 28,201.72 and 10,490.43 is: 15,710.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.09 : 28,201.72 = 10,490.43 : x
  2. Step 2: Convert to fraction form
    18,831.09/28,201.72 = 10,490.43/x
  3. Step 3: Cross multiply
    18,831.09x = 28,201.72 × 10,490.43
  4. Step 4: Simplify right side
    18,831.09x = 295,848,169.54
  5. Step 5: Solve for x
    x = 295,848,169.54/18,831.09
  6. Step 6: Final answer
    x = 15,710.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.