Home / 21,278,913.69-31,922,853.92-6,900,860.40

Finding the Fourth Proportional to 21,278,913.69, 31,922,853.92 and 6,900,860.40

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Solution

The fourth proportional to 21,278,913.69, 31,922,853.92 and 6,900,860.40 is: 10,352,744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278,913.69 : 31,922,853.92 = 6,900,860.40 : x
  2. Step 2: Convert to fraction form
    21,278,913.69/31,922,853.92 = 6,900,860.40/x
  3. Step 3: Cross multiply
    21,278,913.69x = 31,922,853.92 × 6,900,860.40
  4. Step 4: Simplify right side
    21,278,913.69x = 220,295,158,471,512.78
  5. Step 5: Solve for x
    x = 220,295,158,471,512.78/21,278,913.69
  6. Step 6: Final answer
    x = 10,352,744.58

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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.