Home / 12,157.70-18,236.21-3,392.35

Finding the Fourth Proportional to 12,157.70, 18,236.21 and 3,392.35

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Solution

The fourth proportional to 12,157.70, 18,236.21 and 3,392.35 is: 5,088.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.70 : 18,236.21 = 3,392.35 : x
  2. Step 2: Convert to fraction form
    12,157.70/18,236.21 = 3,392.35/x
  3. Step 3: Cross multiply
    12,157.70x = 18,236.21 × 3,392.35
  4. Step 4: Simplify right side
    12,157.70x = 61,863,544.44
  5. Step 5: Solve for x
    x = 61,863,544.44/12,157.70
  6. Step 6: Final answer
    x = 5,088.43

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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.