Home / 28,831.12-39,786.04-16,902.40

Finding the Fourth Proportional to 28,831.12, 39,786.04 and 16,902.40

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Solution

The fourth proportional to 28,831.12, 39,786.04 and 16,902.40 is: 23,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.12 : 39,786.04 = 16,902.40 : x
  2. Step 2: Convert to fraction form
    28,831.12/39,786.04 = 16,902.40/x
  3. Step 3: Cross multiply
    28,831.12x = 39,786.04 × 16,902.40
  4. Step 4: Simplify right side
    28,831.12x = 672,479,562.50
  5. Step 5: Solve for x
    x = 672,479,562.50/28,831.12
  6. Step 6: Final answer
    x = 23,324.78

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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.