Home / 12,215.88-18,316.62-4,314.60

Finding the Fourth Proportional to 12,215.88, 18,316.62 and 4,314.60

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Solution

The fourth proportional to 12,215.88, 18,316.62 and 4,314.60 is: 6,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.88 : 18,316.62 = 4,314.60 : x
  2. Step 2: Convert to fraction form
    12,215.88/18,316.62 = 4,314.60/x
  3. Step 3: Cross multiply
    12,215.88x = 18,316.62 × 4,314.60
  4. Step 4: Simplify right side
    12,215.88x = 79,028,888.65
  5. Step 5: Solve for x
    x = 79,028,888.65/12,215.88
  6. Step 6: Final answer
    x = 6,469.36

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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.