Home / 12,405.03-17,119.07-6,739.84

Finding the Fourth Proportional to 12,405.03, 17,119.07 and 6,739.84

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Solution

The fourth proportional to 12,405.03, 17,119.07 and 6,739.84 is: 9,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.03 : 17,119.07 = 6,739.84 : x
  2. Step 2: Convert to fraction form
    12,405.03/17,119.07 = 6,739.84/x
  3. Step 3: Cross multiply
    12,405.03x = 17,119.07 × 6,739.84
  4. Step 4: Simplify right side
    12,405.03x = 115,379,792.75
  5. Step 5: Solve for x
    x = 115,379,792.75/12,405.03
  6. Step 6: Final answer
    x = 9,301.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.