Home / 20,853.99-28,772.78-11,898.27

Finding the Fourth Proportional to 20,853.99, 28,772.78 and 11,898.27

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Solution

The fourth proportional to 20,853.99, 28,772.78 and 11,898.27 is: 16,416.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.99 : 28,772.78 = 11,898.27 : x
  2. Step 2: Convert to fraction form
    20,853.99/28,772.78 = 11,898.27/x
  3. Step 3: Cross multiply
    20,853.99x = 28,772.78 × 11,898.27
  4. Step 4: Simplify right side
    20,853.99x = 342,346,245.60
  5. Step 5: Solve for x
    x = 342,346,245.60/20,853.99
  6. Step 6: Final answer
    x = 16,416.34

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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.