Home / 12,406.88-17,121.80-6,741.56

Finding the Fourth Proportional to 12,406.88, 17,121.80 and 6,741.56

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Solution

The fourth proportional to 12,406.88, 17,121.80 and 6,741.56 is: 9,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.88 : 17,121.80 = 6,741.56 : x
  2. Step 2: Convert to fraction form
    12,406.88/17,121.80 = 6,741.56/x
  3. Step 3: Cross multiply
    12,406.88x = 17,121.80 × 6,741.56
  4. Step 4: Simplify right side
    12,406.88x = 115,427,663.75
  5. Step 5: Solve for x
    x = 115,427,663.75/12,406.88
  6. Step 6: Final answer
    x = 9,303.52

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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.