Home / 18,718.54-25,831.67-10,220.83

Finding the Fourth Proportional to 18,718.54, 25,831.67 and 10,220.83

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Solution

The fourth proportional to 18,718.54, 25,831.67 and 10,220.83 is: 14,104.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.54 : 25,831.67 = 10,220.83 : x
  2. Step 2: Convert to fraction form
    18,718.54/25,831.67 = 10,220.83/x
  3. Step 3: Cross multiply
    18,718.54x = 25,831.67 × 10,220.83
  4. Step 4: Simplify right side
    18,718.54x = 264,021,107.69
  5. Step 5: Solve for x
    x = 264,021,107.69/18,718.54
  6. Step 6: Final answer
    x = 14,104.79

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1.5x scale

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.