Home / 18,829.64-25,981.88-11,670.86

Finding the Fourth Proportional to 18,829.64, 25,981.88 and 11,670.86

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Solution

The fourth proportional to 18,829.64, 25,981.88 and 11,670.86 is: 16,103.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.64 : 25,981.88 = 11,670.86 : x
  2. Step 2: Convert to fraction form
    18,829.64/25,981.88 = 11,670.86/x
  3. Step 3: Cross multiply
    18,829.64x = 25,981.88 × 11,670.86
  4. Step 4: Simplify right side
    18,829.64x = 303,230,884.02
  5. Step 5: Solve for x
    x = 303,230,884.02/18,829.64
  6. Step 6: Final answer
    x = 16,103.91

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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.