Home / 20,039.09-27,636.41-12,958.61

Finding the Fourth Proportional to 20,039.09, 27,636.41 and 12,958.61

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Solution

The fourth proportional to 20,039.09, 27,636.41 and 12,958.61 is: 17,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.09 : 27,636.41 = 12,958.61 : x
  2. Step 2: Convert to fraction form
    20,039.09/27,636.41 = 12,958.61/x
  3. Step 3: Cross multiply
    20,039.09x = 27,636.41 × 12,958.61
  4. Step 4: Simplify right side
    20,039.09x = 358,129,394.20
  5. Step 5: Solve for x
    x = 358,129,394.20/20,039.09
  6. Step 6: Final answer
    x = 17,871.54

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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.