Home / 28,831.34-39,786.20-16,084.32

Finding the Fourth Proportional to 28,831.34, 39,786.20 and 16,084.32

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Solution

The fourth proportional to 28,831.34, 39,786.20 and 16,084.32 is: 22,195.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.34 : 39,786.20 = 16,084.32 : x
  2. Step 2: Convert to fraction form
    28,831.34/39,786.20 = 16,084.32/x
  3. Step 3: Cross multiply
    28,831.34x = 39,786.20 × 16,084.32
  4. Step 4: Simplify right side
    28,831.34x = 639,934,049.50
  5. Step 5: Solve for x
    x = 639,934,049.50/28,831.34
  6. Step 6: Final answer
    x = 22,195.78

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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.