Home / 12,588.09-17,380.58-8,819.61

Finding the Fourth Proportional to 12,588.09, 17,380.58 and 8,819.61

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Solution

The fourth proportional to 12,588.09, 17,380.58 and 8,819.61 is: 12,177.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,588.09 : 17,380.58 = 8,819.61 : x
  2. Step 2: Convert to fraction form
    12,588.09/17,380.58 = 8,819.61/x
  3. Step 3: Cross multiply
    12,588.09x = 17,380.58 × 8,819.61
  4. Step 4: Simplify right side
    12,588.09x = 153,289,893.08
  5. Step 5: Solve for x
    x = 153,289,893.08/12,588.09
  6. Step 6: Final answer
    x = 12,177.38

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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.