Home / 13,674.61-20,550.39-8,128.95

Finding the Fourth Proportional to 13,674.61, 20,550.39 and 8,128.95

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Solution

The fourth proportional to 13,674.61, 20,550.39 and 8,128.95 is: 12,216.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.61 : 20,550.39 = 8,128.95 : x
  2. Step 2: Convert to fraction form
    13,674.61/20,550.39 = 8,128.95/x
  3. Step 3: Cross multiply
    13,674.61x = 20,550.39 × 8,128.95
  4. Step 4: Simplify right side
    13,674.61x = 167,053,092.79
  5. Step 5: Solve for x
    x = 167,053,092.79/13,674.61
  6. Step 6: Final answer
    x = 12,216.30

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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.