Home / 20,653.79-28,498.74-11,699.44

Finding the Fourth Proportional to 20,653.79, 28,498.74 and 11,699.44

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Solution

The fourth proportional to 20,653.79, 28,498.74 and 11,699.44 is: 16,143.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.79 : 28,498.74 = 11,699.44 : x
  2. Step 2: Convert to fraction form
    20,653.79/28,498.74 = 11,699.44/x
  3. Step 3: Cross multiply
    20,653.79x = 28,498.74 × 11,699.44
  4. Step 4: Simplify right side
    20,653.79x = 333,419,183.59
  5. Step 5: Solve for x
    x = 333,419,183.59/20,653.79
  6. Step 6: Final answer
    x = 16,143.25

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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.