Home / 20,784.59-28,682.77-11,832.09

Finding the Fourth Proportional to 20,784.59, 28,682.77 and 11,832.09

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Solution

The fourth proportional to 20,784.59, 28,682.77 and 11,832.09 is: 16,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.59 : 28,682.77 = 11,832.09 : x
  2. Step 2: Convert to fraction form
    20,784.59/28,682.77 = 11,832.09/x
  3. Step 3: Cross multiply
    20,784.59x = 28,682.77 × 11,832.09
  4. Step 4: Simplify right side
    20,784.59x = 339,377,116.09
  5. Step 5: Solve for x
    x = 339,377,116.09/20,784.59
  6. Step 6: Final answer
    x = 16,328.30

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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.