Home / 20,601.53-28,431.88-11,650.62

Finding the Fourth Proportional to 20,601.53, 28,431.88 and 11,650.62

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Solution

The fourth proportional to 20,601.53, 28,431.88 and 11,650.62 is: 16,078.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.53 : 28,431.88 = 11,650.62 : x
  2. Step 2: Convert to fraction form
    20,601.53/28,431.88 = 11,650.62/x
  3. Step 3: Cross multiply
    20,601.53x = 28,431.88 × 11,650.62
  4. Step 4: Simplify right side
    20,601.53x = 331,249,029.77
  5. Step 5: Solve for x
    x = 331,249,029.77/20,601.53
  6. Step 6: Final answer
    x = 16,078.86

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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.