Home / 12,791.21-19,161.38-10,004.85

Finding the Fourth Proportional to 12,791.21, 19,161.38 and 10,004.85

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Solution

The fourth proportional to 12,791.21, 19,161.38 and 10,004.85 is: 14,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.21 : 19,161.38 = 10,004.85 : x
  2. Step 2: Convert to fraction form
    12,791.21/19,161.38 = 10,004.85/x
  3. Step 3: Cross multiply
    12,791.21x = 19,161.38 × 10,004.85
  4. Step 4: Simplify right side
    12,791.21x = 191,706,757.71
  5. Step 5: Solve for x
    x = 191,706,757.71/12,791.21
  6. Step 6: Final answer
    x = 14,987.39

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1.5x scale

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.