Home / 12,687.22-19,037.80-6,447.77

Finding the Fourth Proportional to 12,687.22, 19,037.80 and 6,447.77

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Solution

The fourth proportional to 12,687.22, 19,037.80 and 6,447.77 is: 9,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.22 : 19,037.80 = 6,447.77 : x
  2. Step 2: Convert to fraction form
    12,687.22/19,037.80 = 6,447.77/x
  3. Step 3: Cross multiply
    12,687.22x = 19,037.80 × 6,447.77
  4. Step 4: Simplify right side
    12,687.22x = 122,751,447.06
  5. Step 5: Solve for x
    x = 122,751,447.06/12,687.22
  6. Step 6: Final answer
    x = 9,675.20

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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.