Home / 18,728,009.40-28,080,609.30-7,354,831.80

Finding the Fourth Proportional to 18,728,009.40, 28,080,609.30 and 7,354,831.80

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Solution

The fourth proportional to 18,728,009.40, 28,080,609.30 and 7,354,831.80 is: 11,027,768.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728,009.40 : 28,080,609.30 = 7,354,831.80 : x
  2. Step 2: Convert to fraction form
    18,728,009.40/28,080,609.30 = 7,354,831.80/x
  3. Step 3: Cross multiply
    18,728,009.40x = 28,080,609.30 × 7,354,831.80
  4. Step 4: Simplify right side
    18,728,009.40x = 206,528,158,243,015.75
  5. Step 5: Solve for x
    x = 206,528,158,243,015.75/18,728,009.40
  6. Step 6: Final answer
    x = 11,027,768.83

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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.