Home / 13,479.46-18,619.80-12,221.94

Finding the Fourth Proportional to 13,479.46, 18,619.80 and 12,221.94

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Solution

The fourth proportional to 13,479.46, 18,619.80 and 12,221.94 is: 16,882.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.46 : 18,619.80 = 12,221.94 : x
  2. Step 2: Convert to fraction form
    13,479.46/18,619.80 = 12,221.94/x
  3. Step 3: Cross multiply
    13,479.46x = 18,619.80 × 12,221.94
  4. Step 4: Simplify right side
    13,479.46x = 227,570,078.41
  5. Step 5: Solve for x
    x = 227,570,078.41/13,479.46
  6. Step 6: Final answer
    x = 16,882.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.