Home / 18,971,786.40-28,458,466.80-5,508,614.40

Finding the Fourth Proportional to 18,971,786.40, 28,458,466.80 and 5,508,614.40

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Solution

The fourth proportional to 18,971,786.40, 28,458,466.80 and 5,508,614.40 is: 8,263,150.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971,786.40 : 28,458,466.80 = 5,508,614.40 : x
  2. Step 2: Convert to fraction form
    18,971,786.40/28,458,466.80 = 5,508,614.40/x
  3. Step 3: Cross multiply
    18,971,786.40x = 28,458,466.80 × 5,508,614.40
  4. Step 4: Simplify right side
    18,971,786.40x = 156,766,720,016,401.94
  5. Step 5: Solve for x
    x = 156,766,720,016,401.94/18,971,786.40
  6. Step 6: Final answer
    x = 8,263,150.17

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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.