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Finding the Fourth Proportional to 11,990,891.70, 17,986,337.55 and 10,077,704.10

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Solution

The fourth proportional to 11,990,891.70, 17,986,337.55 and 10,077,704.10 is: 15,116,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990,891.70 : 17,986,337.55 = 10,077,704.10 : x
  2. Step 2: Convert to fraction form
    11,990,891.70/17,986,337.55 = 10,077,704.10/x
  3. Step 3: Cross multiply
    11,990,891.70x = 17,986,337.55 × 10,077,704.10
  4. Step 4: Simplify right side
    11,990,891.70x = 181,260,987,671,618.97
  5. Step 5: Solve for x
    x = 181,260,987,671,618.97/11,990,891.70
  6. Step 6: Final answer
    x = 15,116,556.15

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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.