Home / 18,713,074.80-28,080,109.80-7,928,540.40

Finding the Fourth Proportional to 18,713,074.80, 28,080,109.80 and 7,928,540.40

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Solution

The fourth proportional to 18,713,074.80, 28,080,109.80 and 7,928,540.40 is: 11,897,258.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713,074.80 : 28,080,109.80 = 7,928,540.40 : x
  2. Step 2: Convert to fraction form
    18,713,074.80/28,080,109.80 = 7,928,540.40/x
  3. Step 3: Cross multiply
    18,713,074.80x = 28,080,109.80 × 7,928,540.40
  4. Step 4: Simplify right side
    18,713,074.80x = 222,634,284,985,735.94
  5. Step 5: Solve for x
    x = 222,634,284,985,735.94/18,713,074.80
  6. Step 6: Final answer
    x = 11,897,258.33

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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.