Home / 12,859.14-19,268.87-8,682.78

Finding the Fourth Proportional to 12,859.14, 19,268.87 and 8,682.78

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Solution

The fourth proportional to 12,859.14, 19,268.87 and 8,682.78 is: 13,010.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.14 : 19,268.87 = 8,682.78 : x
  2. Step 2: Convert to fraction form
    12,859.14/19,268.87 = 8,682.78/x
  3. Step 3: Cross multiply
    12,859.14x = 19,268.87 × 8,682.78
  4. Step 4: Simplify right side
    12,859.14x = 167,307,315.64
  5. Step 5: Solve for x
    x = 167,307,315.64/12,859.14
  6. Step 6: Final answer
    x = 13,010.77

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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.