Home / 12,811.97-19,180.58-7,866.62

Finding the Fourth Proportional to 12,811.97, 19,180.58 and 7,866.62

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Solution

The fourth proportional to 12,811.97, 19,180.58 and 7,866.62 is: 11,776.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.97 : 19,180.58 = 7,866.62 : x
  2. Step 2: Convert to fraction form
    12,811.97/19,180.58 = 7,866.62/x
  3. Step 3: Cross multiply
    12,811.97x = 19,180.58 × 7,866.62
  4. Step 4: Simplify right side
    12,811.97x = 150,886,199.00
  5. Step 5: Solve for x
    x = 150,886,199.00/12,811.97
  6. Step 6: Final answer
    x = 11,776.98

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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.