Home / 20,736,934.20-31,105,401.30-11,778,982.20

Finding the Fourth Proportional to 20,736,934.20, 31,105,401.30 and 11,778,982.20

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Solution

The fourth proportional to 20,736,934.20, 31,105,401.30 and 11,778,982.20 is: 17,668,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,934.20 : 31,105,401.30 = 11,778,982.20 : x
  2. Step 2: Convert to fraction form
    20,736,934.20/31,105,401.30 = 11,778,982.20/x
  3. Step 3: Cross multiply
    20,736,934.20x = 31,105,401.30 × 11,778,982.20
  4. Step 4: Simplify right side
    20,736,934.20x = 366,389,968,236,556.88
  5. Step 5: Solve for x
    x = 366,389,968,236,556.88/20,736,934.20
  6. Step 6: Final answer
    x = 17,668,473.30

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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.