Home / 13,139,198.28-18,000,401.51-12,647,961.63

Finding the Fourth Proportional to 13,139,198.28, 18,000,401.51 and 12,647,961.63

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Solution

The fourth proportional to 13,139,198.28, 18,000,401.51 and 12,647,961.63 is: 17,327,418.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139,198.28 : 18,000,401.51 = 12,647,961.63 : x
  2. Step 2: Convert to fraction form
    13,139,198.28/18,000,401.51 = 12,647,961.63/x
  3. Step 3: Cross multiply
    13,139,198.28x = 18,000,401.51 × 12,647,961.63
  4. Step 4: Simplify right side
    13,139,198.28x = 227,668,387,654,693.97
  5. Step 5: Solve for x
    x = 227,668,387,654,693.97/13,139,198.28
  6. Step 6: Final answer
    x = 17,327,418.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.