Home / 12,858.31-19,287.24-4,093.12

Finding the Fourth Proportional to 12,858.31, 19,287.24 and 4,093.12

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Solution

The fourth proportional to 12,858.31, 19,287.24 and 4,093.12 is: 6,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.31 : 19,287.24 = 4,093.12 : x
  2. Step 2: Convert to fraction form
    12,858.31/19,287.24 = 4,093.12/x
  3. Step 3: Cross multiply
    12,858.31x = 19,287.24 × 4,093.12
  4. Step 4: Simplify right side
    12,858.31x = 78,944,987.79
  5. Step 5: Solve for x
    x = 78,944,987.79/12,858.31
  6. Step 6: Final answer
    x = 6,139.61

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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.