Home / 20,576.25-28,392.95-11,621.86

Finding the Fourth Proportional to 20,576.25, 28,392.95 and 11,621.86

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Solution

The fourth proportional to 20,576.25, 28,392.95 and 11,621.86 is: 16,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.25 : 28,392.95 = 11,621.86 : x
  2. Step 2: Convert to fraction form
    20,576.25/28,392.95 = 11,621.86/x
  3. Step 3: Cross multiply
    20,576.25x = 28,392.95 × 11,621.86
  4. Step 4: Simplify right side
    20,576.25x = 329,978,847.96
  5. Step 5: Solve for x
    x = 329,978,847.96/20,576.25
  6. Step 6: Final answer
    x = 16,036.88

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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.