Home / 12,968.43-19,438.63-6,290.79

Finding the Fourth Proportional to 12,968.43, 19,438.63 and 6,290.79

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Solution

The fourth proportional to 12,968.43, 19,438.63 and 6,290.79 is: 9,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.43 : 19,438.63 = 6,290.79 : x
  2. Step 2: Convert to fraction form
    12,968.43/19,438.63 = 6,290.79/x
  3. Step 3: Cross multiply
    12,968.43x = 19,438.63 × 6,290.79
  4. Step 4: Simplify right side
    12,968.43x = 122,284,340.65
  5. Step 5: Solve for x
    x = 122,284,340.65/12,968.43
  6. Step 6: Final answer
    x = 9,429.39

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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.