Home / 12,283.74-18,431.67-8,380.35

Finding the Fourth Proportional to 12,283.74, 18,431.67 and 8,380.35

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Solution

The fourth proportional to 12,283.74, 18,431.67 and 8,380.35 is: 12,574.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.74 : 18,431.67 = 8,380.35 : x
  2. Step 2: Convert to fraction form
    12,283.74/18,431.67 = 8,380.35/x
  3. Step 3: Cross multiply
    12,283.74x = 18,431.67 × 8,380.35
  4. Step 4: Simplify right side
    12,283.74x = 154,463,845.68
  5. Step 5: Solve for x
    x = 154,463,845.68/12,283.74
  6. Step 6: Final answer
    x = 12,574.66

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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.