Home / 12,143.68-18,237.36-11,589.64

Finding the Fourth Proportional to 12,143.68, 18,237.36 and 11,589.64

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Solution

The fourth proportional to 12,143.68, 18,237.36 and 11,589.64 is: 17,405.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.68 : 18,237.36 = 11,589.64 : x
  2. Step 2: Convert to fraction form
    12,143.68/18,237.36 = 11,589.64/x
  3. Step 3: Cross multiply
    12,143.68x = 18,237.36 × 11,589.64
  4. Step 4: Simplify right side
    12,143.68x = 211,364,436.95
  5. Step 5: Solve for x
    x = 211,364,436.95/12,143.68
  6. Step 6: Final answer
    x = 17,405.30

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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.