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Finding the Fourth Proportional to 12,745.99, 17,588.90 and 7,081.14

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Solution

The fourth proportional to 12,745.99, 17,588.90 and 7,081.14 is: 9,771.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.99 : 17,588.90 = 7,081.14 : x
  2. Step 2: Convert to fraction form
    12,745.99/17,588.90 = 7,081.14/x
  3. Step 3: Cross multiply
    12,745.99x = 17,588.90 × 7,081.14
  4. Step 4: Simplify right side
    12,745.99x = 124,549,340.00
  5. Step 5: Solve for x
    x = 124,549,340.00/12,745.99
  6. Step 6: Final answer
    x = 9,771.65

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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.