Home / 19,152,163.80-28,728,245.70-11,971,805.40

Finding the Fourth Proportional to 19,152,163.80, 28,728,245.70 and 11,971,805.40

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Solution

The fourth proportional to 19,152,163.80, 28,728,245.70 and 11,971,805.40 is: 17,957,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152,163.80 : 28,728,245.70 = 11,971,805.40 : x
  2. Step 2: Convert to fraction form
    19,152,163.80/28,728,245.70 = 11,971,805.40/x
  3. Step 3: Cross multiply
    19,152,163.80x = 28,728,245.70 × 11,971,805.40
  4. Step 4: Simplify right side
    19,152,163.80x = 343,928,967,003,786.81
  5. Step 5: Solve for x
    x = 343,928,967,003,786.81/19,152,163.80
  6. Step 6: Final answer
    x = 17,957,708.10

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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.