Home / 20,496.33-28,289.52-13,418.64

Finding the Fourth Proportional to 20,496.33, 28,289.52 and 13,418.64

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Solution

The fourth proportional to 20,496.33, 28,289.52 and 13,418.64 is: 18,520.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.33 : 28,289.52 = 13,418.64 : x
  2. Step 2: Convert to fraction form
    20,496.33/28,289.52 = 13,418.64/x
  3. Step 3: Cross multiply
    20,496.33x = 28,289.52 × 13,418.64
  4. Step 4: Simplify right side
    20,496.33x = 379,606,884.65
  5. Step 5: Solve for x
    x = 379,606,884.65/20,496.33
  6. Step 6: Final answer
    x = 18,520.72

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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.