Home / 18,811.80-28,217.94-12,966.84

Finding the Fourth Proportional to 18,811.80, 28,217.94 and 12,966.84

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Solution

The fourth proportional to 18,811.80, 28,217.94 and 12,966.84 is: 19,450.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.80 : 28,217.94 = 12,966.84 : x
  2. Step 2: Convert to fraction form
    18,811.80/28,217.94 = 12,966.84/x
  3. Step 3: Cross multiply
    18,811.80x = 28,217.94 × 12,966.84
  4. Step 4: Simplify right side
    18,811.80x = 365,897,513.11
  5. Step 5: Solve for x
    x = 365,897,513.11/18,811.80
  6. Step 6: Final answer
    x = 19,450.43

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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.