Home / 28,831.32-39,786.93-18,229.68

Finding the Fourth Proportional to 28,831.32, 39,786.93 and 18,229.68

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Solution

The fourth proportional to 28,831.32, 39,786.93 and 18,229.68 is: 25,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.32 : 39,786.93 = 18,229.68 : x
  2. Step 2: Convert to fraction form
    28,831.32/39,786.93 = 18,229.68/x
  3. Step 3: Cross multiply
    28,831.32x = 39,786.93 × 18,229.68
  4. Step 4: Simplify right side
    28,831.32x = 725,303,002.08
  5. Step 5: Solve for x
    x = 725,303,002.08/28,831.32
  6. Step 6: Final answer
    x = 25,156.77

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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.