Home / 20,662.43-28,515.83-11,710.49

Finding the Fourth Proportional to 20,662.43, 28,515.83 and 11,710.49

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Solution

The fourth proportional to 20,662.43, 28,515.83 and 11,710.49 is: 16,161.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.43 : 28,515.83 = 11,710.49 : x
  2. Step 2: Convert to fraction form
    20,662.43/28,515.83 = 11,710.49/x
  3. Step 3: Cross multiply
    20,662.43x = 28,515.83 × 11,710.49
  4. Step 4: Simplify right side
    20,662.43x = 333,934,140.93
  5. Step 5: Solve for x
    x = 333,934,140.93/20,662.43
  6. Step 6: Final answer
    x = 16,161.42

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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.