Home / 20,775.83-28,673.10-11,701.49

Finding the Fourth Proportional to 20,775.83, 28,673.10 and 11,701.49

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Solution

The fourth proportional to 20,775.83, 28,673.10 and 11,701.49 is: 16,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.83 : 28,673.10 = 11,701.49 : x
  2. Step 2: Convert to fraction form
    20,775.83/28,673.10 = 11,701.49/x
  3. Step 3: Cross multiply
    20,775.83x = 28,673.10 × 11,701.49
  4. Step 4: Simplify right side
    20,775.83x = 335,517,849.55
  5. Step 5: Solve for x
    x = 335,517,849.55/20,775.83
  6. Step 6: Final answer
    x = 16,149.44

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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.