Home / 21,205.98-31,819.90-8,735.22

Finding the Fourth Proportional to 21,205.98, 31,819.90 and 8,735.22

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Solution

The fourth proportional to 21,205.98, 31,819.90 and 8,735.22 is: 13,107.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.98 : 31,819.90 = 8,735.22 : x
  2. Step 2: Convert to fraction form
    21,205.98/31,819.90 = 8,735.22/x
  3. Step 3: Cross multiply
    21,205.98x = 31,819.90 × 8,735.22
  4. Step 4: Simplify right side
    21,205.98x = 277,953,826.88
  5. Step 5: Solve for x
    x = 277,953,826.88/21,205.98
  6. Step 6: Final answer
    x = 13,107.33

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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.