Home / 12,986.44-19,484.30-4,221.39

Finding the Fourth Proportional to 12,986.44, 19,484.30 and 4,221.39

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Solution

The fourth proportional to 12,986.44, 19,484.30 and 4,221.39 is: 6,333.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.44 : 19,484.30 = 4,221.39 : x
  2. Step 2: Convert to fraction form
    12,986.44/19,484.30 = 4,221.39/x
  3. Step 3: Cross multiply
    12,986.44x = 19,484.30 × 4,221.39
  4. Step 4: Simplify right side
    12,986.44x = 82,250,829.18
  5. Step 5: Solve for x
    x = 82,250,829.18/12,986.44
  6. Step 6: Final answer
    x = 6,333.59

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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.