Home / 27,961.68-38,580.77-20,412.12

Finding the Fourth Proportional to 27,961.68, 38,580.77 and 20,412.12

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Solution

The fourth proportional to 27,961.68, 38,580.77 and 20,412.12 is: 28,164.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,961.68 : 38,580.77 = 20,412.12 : x
  2. Step 2: Convert to fraction form
    27,961.68/38,580.77 = 20,412.12/x
  3. Step 3: Cross multiply
    27,961.68x = 38,580.77 × 20,412.12
  4. Step 4: Simplify right side
    27,961.68x = 787,515,204.87
  5. Step 5: Solve for x
    x = 787,515,204.87/27,961.68
  6. Step 6: Final answer
    x = 28,164.09

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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.