Home / 12,986.26-19,484.55-4,221.25

Finding the Fourth Proportional to 12,986.26, 19,484.55 and 4,221.25

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Solution

The fourth proportional to 12,986.26, 19,484.55 and 4,221.25 is: 6,333.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.26 : 19,484.55 = 4,221.25 : x
  2. Step 2: Convert to fraction form
    12,986.26/19,484.55 = 4,221.25/x
  3. Step 3: Cross multiply
    12,986.26x = 19,484.55 × 4,221.25
  4. Step 4: Simplify right side
    12,986.26x = 82,249,107.98
  5. Step 5: Solve for x
    x = 82,249,107.98/12,986.26
  6. Step 6: Final answer
    x = 6,333.55

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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.