Home / 18,686,771.40-28,030,157.10-11,474,920.20

Finding the Fourth Proportional to 18,686,771.40, 28,030,157.10 and 11,474,920.20

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Solution

The fourth proportional to 18,686,771.40, 28,030,157.10 and 11,474,920.20 is: 17,212,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,771.40 : 28,030,157.10 = 11,474,920.20 : x
  2. Step 2: Convert to fraction form
    18,686,771.40/28,030,157.10 = 11,474,920.20/x
  3. Step 3: Cross multiply
    18,686,771.40x = 28,030,157.10 × 11,474,920.20
  4. Step 4: Simplify right side
    18,686,771.40x = 321,643,815,915,963.44
  5. Step 5: Solve for x
    x = 321,643,815,915,963.44/18,686,771.40
  6. Step 6: Final answer
    x = 17,212,380.30

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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.