Home / 20,601.20-28,429.48-11,650.46

Finding the Fourth Proportional to 20,601.20, 28,429.48 and 11,650.46

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Solution

The fourth proportional to 20,601.20, 28,429.48 and 11,650.46 is: 16,077.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.20 : 28,429.48 = 11,650.46 : x
  2. Step 2: Convert to fraction form
    20,601.20/28,429.48 = 11,650.46/x
  3. Step 3: Cross multiply
    20,601.20x = 28,429.48 × 11,650.46
  4. Step 4: Simplify right side
    20,601.20x = 331,216,348.29
  5. Step 5: Solve for x
    x = 331,216,348.29/20,601.20
  6. Step 6: Final answer
    x = 16,077.53

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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.