Home / 12,766.80-19,166.76-9,847.20

Finding the Fourth Proportional to 12,766.80, 19,166.76 and 9,847.20

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Solution

The fourth proportional to 12,766.80, 19,166.76 and 9,847.20 is: 14,783.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,766.80 : 19,166.76 = 9,847.20 : x
  2. Step 2: Convert to fraction form
    12,766.80/19,166.76 = 9,847.20/x
  3. Step 3: Cross multiply
    12,766.80x = 19,166.76 × 9,847.20
  4. Step 4: Simplify right side
    12,766.80x = 188,738,919.07
  5. Step 5: Solve for x
    x = 188,738,919.07/12,766.80
  6. Step 6: Final answer
    x = 14,783.57

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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.