Home / 12,842.98-19,228.01-8,405.80

Finding the Fourth Proportional to 12,842.98, 19,228.01 and 8,405.80

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Solution

The fourth proportional to 12,842.98, 19,228.01 and 8,405.80 is: 12,584.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,842.98 : 19,228.01 = 8,405.80 : x
  2. Step 2: Convert to fraction form
    12,842.98/19,228.01 = 8,405.80/x
  3. Step 3: Cross multiply
    12,842.98x = 19,228.01 × 8,405.80
  4. Step 4: Simplify right side
    12,842.98x = 161,626,716.36
  5. Step 5: Solve for x
    x = 161,626,716.36/12,842.98
  6. Step 6: Final answer
    x = 12,584.83

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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.