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Finding the Fourth Proportional to 28,551.06, 42,831.81 and 8,828.28

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Solution

The fourth proportional to 28,551.06, 42,831.81 and 8,828.28 is: 13,244.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,551.06 : 42,831.81 = 8,828.28 : x
  2. Step 2: Convert to fraction form
    28,551.06/42,831.81 = 8,828.28/x
  3. Step 3: Cross multiply
    28,551.06x = 42,831.81 × 8,828.28
  4. Step 4: Simplify right side
    28,551.06x = 378,131,211.59
  5. Step 5: Solve for x
    x = 378,131,211.59/28,551.06
  6. Step 6: Final answer
    x = 13,244.03

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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.