Home / 12,642.06-18,866.97-11,240.85

Finding the Fourth Proportional to 12,642.06, 18,866.97 and 11,240.85

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Solution

The fourth proportional to 12,642.06, 18,866.97 and 11,240.85 is: 16,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.06 : 18,866.97 = 11,240.85 : x
  2. Step 2: Convert to fraction form
    12,642.06/18,866.97 = 11,240.85/x
  3. Step 3: Cross multiply
    12,642.06x = 18,866.97 × 11,240.85
  4. Step 4: Simplify right side
    12,642.06x = 212,080,779.72
  5. Step 5: Solve for x
    x = 212,080,779.72/12,642.06
  6. Step 6: Final answer
    x = 16,775.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.