Home / 20,732.39-28,610.76-11,782.86

Finding the Fourth Proportional to 20,732.39, 28,610.76 and 11,782.86

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Solution

The fourth proportional to 20,732.39, 28,610.76 and 11,782.86 is: 16,260.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.39 : 28,610.76 = 11,782.86 : x
  2. Step 2: Convert to fraction form
    20,732.39/28,610.76 = 11,782.86/x
  3. Step 3: Cross multiply
    20,732.39x = 28,610.76 × 11,782.86
  4. Step 4: Simplify right side
    20,732.39x = 337,116,579.57
  5. Step 5: Solve for x
    x = 337,116,579.57/20,732.39
  6. Step 6: Final answer
    x = 16,260.39

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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.