Home / 20,124.02-27,770.77-11,171.09

Finding the Fourth Proportional to 20,124.02, 27,770.77 and 11,171.09

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Solution

The fourth proportional to 20,124.02, 27,770.77 and 11,171.09 is: 15,415.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.02 : 27,770.77 = 11,171.09 : x
  2. Step 2: Convert to fraction form
    20,124.02/27,770.77 = 11,171.09/x
  3. Step 3: Cross multiply
    20,124.02x = 27,770.77 × 11,171.09
  4. Step 4: Simplify right side
    20,124.02x = 310,229,771.04
  5. Step 5: Solve for x
    x = 310,229,771.04/20,124.02
  6. Step 6: Final answer
    x = 15,415.89

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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.