Home / 20,440,689.25-28,209,846.96-11,740,540.81

Finding the Fourth Proportional to 20,440,689.25, 28,209,846.96 and 11,740,540.81

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Solution

The fourth proportional to 20,440,689.25, 28,209,846.96 and 11,740,540.81 is: 16,202,920.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440,689.25 : 28,209,846.96 = 11,740,540.81 : x
  2. Step 2: Convert to fraction form
    20,440,689.25/28,209,846.96 = 11,740,540.81/x
  3. Step 3: Cross multiply
    20,440,689.25x = 28,209,846.96 × 11,740,540.81
  4. Step 4: Simplify right side
    20,440,689.25x = 331,198,859,336,685.19
  5. Step 5: Solve for x
    x = 331,198,859,336,685.19/20,440,689.25
  6. Step 6: Final answer
    x = 16,202,920.33

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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.