Home / 21,278,917.70-31,922,859.92-6,900,864.40

Finding the Fourth Proportional to 21,278,917.70, 31,922,859.92 and 6,900,864.40

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Solution

The fourth proportional to 21,278,917.70, 31,922,859.92 and 6,900,864.40 is: 10,352,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,917.70 : 31,922,859.92 = 6,900,864.40 : x
  2. Step 2: Convert to fraction form
    21,278,917.70/31,922,859.92 = 6,900,864.40/x
  3. Step 3: Cross multiply
    21,278,917.70x = 31,922,859.92 × 6,900,864.40
  4. Step 4: Simplify right side
    21,278,917.70x = 220,295,327,568,114.88
  5. Step 5: Solve for x
    x = 220,295,327,568,114.88/21,278,917.70
  6. Step 6: Final answer
    x = 10,352,750.58

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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.