Home / 19,778.75-29,647.62-12,366.19

Finding the Fourth Proportional to 19,778.75, 29,647.62 and 12,366.19

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Solution

The fourth proportional to 19,778.75, 29,647.62 and 12,366.19 is: 18,536.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.75 : 29,647.62 = 12,366.19 : x
  2. Step 2: Convert to fraction form
    19,778.75/29,647.62 = 12,366.19/x
  3. Step 3: Cross multiply
    19,778.75x = 29,647.62 × 12,366.19
  4. Step 4: Simplify right side
    19,778.75x = 366,628,185.40
  5. Step 5: Solve for x
    x = 366,628,185.40/19,778.75
  6. Step 6: Final answer
    x = 18,536.47

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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.