Home / 12,405.94-17,120.06-6,740.56

Finding the Fourth Proportional to 12,405.94, 17,120.06 and 6,740.56

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Solution

The fourth proportional to 12,405.94, 17,120.06 and 6,740.56 is: 9,301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.94 : 17,120.06 = 6,740.56 : x
  2. Step 2: Convert to fraction form
    12,405.94/17,120.06 = 6,740.56/x
  3. Step 3: Cross multiply
    12,405.94x = 17,120.06 × 6,740.56
  4. Step 4: Simplify right side
    12,405.94x = 115,398,791.63
  5. Step 5: Solve for x
    x = 115,398,791.63/12,405.94
  6. Step 6: Final answer
    x = 9,301.90

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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.