Home / 12,526.68-18,791.39-5,131.89

Finding the Fourth Proportional to 12,526.68, 18,791.39 and 5,131.89

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Solution

The fourth proportional to 12,526.68, 18,791.39 and 5,131.89 is: 7,698.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,526.68 : 18,791.39 = 5,131.89 : x
  2. Step 2: Convert to fraction form
    12,526.68/18,791.39 = 5,131.89/x
  3. Step 3: Cross multiply
    12,526.68x = 18,791.39 × 5,131.89
  4. Step 4: Simplify right side
    12,526.68x = 96,435,359.26
  5. Step 5: Solve for x
    x = 96,435,359.26/12,526.68
  6. Step 6: Final answer
    x = 7,698.39

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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.