Home / 22,421.19-30,940.60-12,211.99

Finding the Fourth Proportional to 22,421.19, 30,940.60 and 12,211.99

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Solution

The fourth proportional to 22,421.19, 30,940.60 and 12,211.99 is: 16,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.19 : 30,940.60 = 12,211.99 : x
  2. Step 2: Convert to fraction form
    22,421.19/30,940.60 = 12,211.99/x
  3. Step 3: Cross multiply
    22,421.19x = 30,940.60 × 12,211.99
  4. Step 4: Simplify right side
    22,421.19x = 377,846,299.83
  5. Step 5: Solve for x
    x = 377,846,299.83/22,421.19
  6. Step 6: Final answer
    x = 16,852.20

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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.