Home / 21,899.30-30,221.07-12,467.87

Finding the Fourth Proportional to 21,899.30, 30,221.07 and 12,467.87

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Solution

The fourth proportional to 21,899.30, 30,221.07 and 12,467.87 is: 17,205.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.30 : 30,221.07 = 12,467.87 : x
  2. Step 2: Convert to fraction form
    21,899.30/30,221.07 = 12,467.87/x
  3. Step 3: Cross multiply
    21,899.30x = 30,221.07 × 12,467.87
  4. Step 4: Simplify right side
    21,899.30x = 376,792,220.92
  5. Step 5: Solve for x
    x = 376,792,220.92/21,899.30
  6. Step 6: Final answer
    x = 17,205.67

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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.