Home / 18,831.31-28,271.57-15,928.07

Finding the Fourth Proportional to 18,831.31, 28,271.57 and 15,928.07

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Solution

The fourth proportional to 18,831.31, 28,271.57 and 15,928.07 is: 23,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.31 : 28,271.57 = 15,928.07 : x
  2. Step 2: Convert to fraction form
    18,831.31/28,271.57 = 15,928.07/x
  3. Step 3: Cross multiply
    18,831.31x = 28,271.57 × 15,928.07
  4. Step 4: Simplify right side
    18,831.31x = 450,311,324.97
  5. Step 5: Solve for x
    x = 450,311,324.97/18,831.31
  6. Step 6: Final answer
    x = 23,912.91

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1.5x scale

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.