Home / 12,078.36-18,121.48-5,839.08

Finding the Fourth Proportional to 12,078.36, 18,121.48 and 5,839.08

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Solution

The fourth proportional to 12,078.36, 18,121.48 and 5,839.08 is: 8,760.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.36 : 18,121.48 = 5,839.08 : x
  2. Step 2: Convert to fraction form
    12,078.36/18,121.48 = 5,839.08/x
  3. Step 3: Cross multiply
    12,078.36x = 18,121.48 × 5,839.08
  4. Step 4: Simplify right side
    12,078.36x = 105,812,771.44
  5. Step 5: Solve for x
    x = 105,812,771.44/12,078.36
  6. Step 6: Final answer
    x = 8,760.52

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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.