Home / 12,819.58-19,231.42-4,921.76

Finding the Fourth Proportional to 12,819.58, 19,231.42 and 4,921.76

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Solution

The fourth proportional to 12,819.58, 19,231.42 and 4,921.76 is: 7,383.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.58 : 19,231.42 = 4,921.76 : x
  2. Step 2: Convert to fraction form
    12,819.58/19,231.42 = 4,921.76/x
  3. Step 3: Cross multiply
    12,819.58x = 19,231.42 × 4,921.76
  4. Step 4: Simplify right side
    12,819.58x = 94,652,433.70
  5. Step 5: Solve for x
    x = 94,652,433.70/12,819.58
  6. Step 6: Final answer
    x = 7,383.43

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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.