Home / 20,800.20-28,709.44-11,853.01

Finding the Fourth Proportional to 20,800.20, 28,709.44 and 11,853.01

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Solution

The fourth proportional to 20,800.20, 28,709.44 and 11,853.01 is: 16,360.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.20 : 28,709.44 = 11,853.01 : x
  2. Step 2: Convert to fraction form
    20,800.20/28,709.44 = 11,853.01/x
  3. Step 3: Cross multiply
    20,800.20x = 28,709.44 × 11,853.01
  4. Step 4: Simplify right side
    20,800.20x = 340,293,285.67
  5. Step 5: Solve for x
    x = 340,293,285.67/20,800.20
  6. Step 6: Final answer
    x = 16,360.09

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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.