Home / 12,576.13-18,866.90-3,811.74

Finding the Fourth Proportional to 12,576.13, 18,866.90 and 3,811.74

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Solution

The fourth proportional to 12,576.13, 18,866.90 and 3,811.74 is: 5,718.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.13 : 18,866.90 = 3,811.74 : x
  2. Step 2: Convert to fraction form
    12,576.13/18,866.90 = 3,811.74/x
  3. Step 3: Cross multiply
    12,576.13x = 18,866.90 × 3,811.74
  4. Step 4: Simplify right side
    12,576.13x = 71,915,717.41
  5. Step 5: Solve for x
    x = 71,915,717.41/12,576.13
  6. Step 6: Final answer
    x = 5,718.43

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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.