Home / 38,629.80-57,831.30-28,812.60

Finding the Fourth Proportional to 38,629.80, 57,831.30 and 28,812.60

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Solution

The fourth proportional to 38,629.80, 57,831.30 and 28,812.60 is: 43,134.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,629.80 : 57,831.30 = 28,812.60 : x
  2. Step 2: Convert to fraction form
    38,629.80/57,831.30 = 28,812.60/x
  3. Step 3: Cross multiply
    38,629.80x = 57,831.30 × 28,812.60
  4. Step 4: Simplify right side
    38,629.80x = 1,666,270,114.38
  5. Step 5: Solve for x
    x = 1,666,270,114.38/38,629.80
  6. Step 6: Final answer
    x = 43,134.32

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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.