Home / 12,406.80-17,121.40-6,741.61

Finding the Fourth Proportional to 12,406.80, 17,121.40 and 6,741.61

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Solution

The fourth proportional to 12,406.80, 17,121.40 and 6,741.61 is: 9,303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.80 : 17,121.40 = 6,741.61 : x
  2. Step 2: Convert to fraction form
    12,406.80/17,121.40 = 6,741.61/x
  3. Step 3: Cross multiply
    12,406.80x = 17,121.40 × 6,741.61
  4. Step 4: Simplify right side
    12,406.80x = 115,425,857.07
  5. Step 5: Solve for x
    x = 115,425,857.07/12,406.80
  6. Step 6: Final answer
    x = 9,303.43

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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.