Home / 12,378.71-18,568.07-3,613.70

Finding the Fourth Proportional to 12,378.71, 18,568.07 and 3,613.70

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Solution

The fourth proportional to 12,378.71, 18,568.07 and 3,613.70 is: 5,420.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.71 : 18,568.07 = 3,613.70 : x
  2. Step 2: Convert to fraction form
    12,378.71/18,568.07 = 3,613.70/x
  3. Step 3: Cross multiply
    12,378.71x = 18,568.07 × 3,613.70
  4. Step 4: Simplify right side
    12,378.71x = 67,099,323.65
  5. Step 5: Solve for x
    x = 67,099,323.65/12,378.71
  6. Step 6: Final answer
    x = 5,420.54

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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.