Home / 18,686,564.80-28,029,847.20-11,474,713.60

Finding the Fourth Proportional to 18,686,564.80, 28,029,847.20 and 11,474,713.60

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Solution

The fourth proportional to 18,686,564.80, 28,029,847.20 and 11,474,713.60 is: 17,212,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,564.80 : 28,029,847.20 = 11,474,713.60 : x
  2. Step 2: Convert to fraction form
    18,686,564.80/28,029,847.20 = 11,474,713.60/x
  3. Step 3: Cross multiply
    18,686,564.80x = 28,029,847.20 × 11,474,713.60
  4. Step 4: Simplify right side
    18,686,564.80x = 321,634,468,871,761.88
  5. Step 5: Solve for x
    x = 321,634,468,871,761.88/18,686,564.80
  6. Step 6: Final answer
    x = 17,212,070.40

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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.