Home / 19,218.74-28,831.19-8,125.54

Finding the Fourth Proportional to 19,218.74, 28,831.19 and 8,125.54

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Solution

The fourth proportional to 19,218.74, 28,831.19 and 8,125.54 is: 12,189.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.74 : 28,831.19 = 8,125.54 : x
  2. Step 2: Convert to fraction form
    19,218.74/28,831.19 = 8,125.54/x
  3. Step 3: Cross multiply
    19,218.74x = 28,831.19 × 8,125.54
  4. Step 4: Simplify right side
    19,218.74x = 234,268,874.89
  5. Step 5: Solve for x
    x = 234,268,874.89/19,218.74
  6. Step 6: Final answer
    x = 12,189.61

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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.