Home / 18,831.89-28,213.41-8,818.27

Finding the Fourth Proportional to 18,831.89, 28,213.41 and 8,818.27

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Solution

The fourth proportional to 18,831.89, 28,213.41 and 8,818.27 is: 13,211.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.89 : 28,213.41 = 8,818.27 : x
  2. Step 2: Convert to fraction form
    18,831.89/28,213.41 = 8,818.27/x
  3. Step 3: Cross multiply
    18,831.89x = 28,213.41 × 8,818.27
  4. Step 4: Simplify right side
    18,831.89x = 248,793,429.54
  5. Step 5: Solve for x
    x = 248,793,429.54/18,831.89
  6. Step 6: Final answer
    x = 13,211.28

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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.