Home / 12,745.09-17,590.74-8,142.93

Finding the Fourth Proportional to 12,745.09, 17,590.74 and 8,142.93

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Solution

The fourth proportional to 12,745.09, 17,590.74 and 8,142.93 is: 11,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.09 : 17,590.74 = 8,142.93 : x
  2. Step 2: Convert to fraction form
    12,745.09/17,590.74 = 8,142.93/x
  3. Step 3: Cross multiply
    12,745.09x = 17,590.74 × 8,142.93
  4. Step 4: Simplify right side
    12,745.09x = 143,240,129.04
  5. Step 5: Solve for x
    x = 143,240,129.04/12,745.09
  6. Step 6: Final answer
    x = 11,238.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.