Home / 19,220.18-28,831.49-8,124.80

Finding the Fourth Proportional to 19,220.18, 28,831.49 and 8,124.80

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Solution

The fourth proportional to 19,220.18, 28,831.49 and 8,124.80 is: 12,187.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.18 : 28,831.49 = 8,124.80 : x
  2. Step 2: Convert to fraction form
    19,220.18/28,831.49 = 8,124.80/x
  3. Step 3: Cross multiply
    19,220.18x = 28,831.49 × 8,124.80
  4. Step 4: Simplify right side
    19,220.18x = 234,250,049.33
  5. Step 5: Solve for x
    x = 234,250,049.33/19,220.18
  6. Step 6: Final answer
    x = 12,187.71

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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.