Home / 12,405.59-18,611.44-6,168.56

Finding the Fourth Proportional to 12,405.59, 18,611.44 and 6,168.56

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Solution

The fourth proportional to 12,405.59, 18,611.44 and 6,168.56 is: 9,254.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.59 : 18,611.44 = 6,168.56 : x
  2. Step 2: Convert to fraction form
    12,405.59/18,611.44 = 6,168.56/x
  3. Step 3: Cross multiply
    12,405.59x = 18,611.44 × 6,168.56
  4. Step 4: Simplify right side
    12,405.59x = 114,805,675.85
  5. Step 5: Solve for x
    x = 114,805,675.85/12,405.59
  6. Step 6: Final answer
    x = 9,254.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.