Home / 12,405.43-17,119.37-6,740.06

Finding the Fourth Proportional to 12,405.43, 17,119.37 and 6,740.06

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Solution

The fourth proportional to 12,405.43, 17,119.37 and 6,740.06 is: 9,301.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.43 : 17,119.37 = 6,740.06 : x
  2. Step 2: Convert to fraction form
    12,405.43/17,119.37 = 6,740.06/x
  3. Step 3: Cross multiply
    12,405.43x = 17,119.37 × 6,740.06
  4. Step 4: Simplify right side
    12,405.43x = 115,385,580.96
  5. Step 5: Solve for x
    x = 115,385,580.96/12,405.43
  6. Step 6: Final answer
    x = 9,301.22

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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.