Home / 13,393.24-18,474.09-8,611.55

Finding the Fourth Proportional to 13,393.24, 18,474.09 and 8,611.55

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Solution

The fourth proportional to 13,393.24, 18,474.09 and 8,611.55 is: 11,878.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.24 : 18,474.09 = 8,611.55 : x
  2. Step 2: Convert to fraction form
    13,393.24/18,474.09 = 8,611.55/x
  3. Step 3: Cross multiply
    13,393.24x = 18,474.09 × 8,611.55
  4. Step 4: Simplify right side
    13,393.24x = 159,090,549.74
  5. Step 5: Solve for x
    x = 159,090,549.74/13,393.24
  6. Step 6: Final answer
    x = 11,878.42

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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.