Home / 12,718.90-19,078.26-3,953.80

Finding the Fourth Proportional to 12,718.90, 19,078.26 and 3,953.80

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Solution

The fourth proportional to 12,718.90, 19,078.26 and 3,953.80 is: 5,930.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.90 : 19,078.26 = 3,953.80 : x
  2. Step 2: Convert to fraction form
    12,718.90/19,078.26 = 3,953.80/x
  3. Step 3: Cross multiply
    12,718.90x = 19,078.26 × 3,953.80
  4. Step 4: Simplify right side
    12,718.90x = 75,431,624.39
  5. Step 5: Solve for x
    x = 75,431,624.39/12,718.90
  6. Step 6: Final answer
    x = 5,930.67

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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.