Home / 12,723.78-19,085.70-3,959.58

Finding the Fourth Proportional to 12,723.78, 19,085.70 and 3,959.58

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Solution

The fourth proportional to 12,723.78, 19,085.70 and 3,959.58 is: 5,939.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723.78 : 19,085.70 = 3,959.58 : x
  2. Step 2: Convert to fraction form
    12,723.78/19,085.70 = 3,959.58/x
  3. Step 3: Cross multiply
    12,723.78x = 19,085.70 × 3,959.58
  4. Step 4: Simplify right side
    12,723.78x = 75,571,356.01
  5. Step 5: Solve for x
    x = 75,571,356.01/12,723.78
  6. Step 6: Final answer
    x = 5,939.38

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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.