Home / 18,720,045.20-28,080,067.80-15,696,736.40

Finding the Fourth Proportional to 18,720,045.20, 28,080,067.80 and 15,696,736.40

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Solution

The fourth proportional to 18,720,045.20, 28,080,067.80 and 15,696,736.40 is: 23,545,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720,045.20 : 28,080,067.80 = 15,696,736.40 : x
  2. Step 2: Convert to fraction form
    18,720,045.20/28,080,067.80 = 15,696,736.40/x
  3. Step 3: Cross multiply
    18,720,045.20x = 28,080,067.80 × 15,696,736.40
  4. Step 4: Simplify right side
    18,720,045.20x = 440,765,422,350,727.94
  5. Step 5: Solve for x
    x = 440,765,422,350,727.94/18,720,045.20
  6. Step 6: Final answer
    x = 23,545,104.60

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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.