Home / 20,889.20-28,826.72-11,814.42

Finding the Fourth Proportional to 20,889.20, 28,826.72 and 11,814.42

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Solution

The fourth proportional to 20,889.20, 28,826.72 and 11,814.42 is: 16,303.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.20 : 28,826.72 = 11,814.42 : x
  2. Step 2: Convert to fraction form
    20,889.20/28,826.72 = 11,814.42/x
  3. Step 3: Cross multiply
    20,889.20x = 28,826.72 × 11,814.42
  4. Step 4: Simplify right side
    20,889.20x = 340,570,977.30
  5. Step 5: Solve for x
    x = 340,570,977.30/20,889.20
  6. Step 6: Final answer
    x = 16,303.69

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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.