Home / 20,504.07-28,295.62-11,072.64

Finding the Fourth Proportional to 20,504.07, 28,295.62 and 11,072.64

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Solution

The fourth proportional to 20,504.07, 28,295.62 and 11,072.64 is: 15,280.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.07 : 28,295.62 = 11,072.64 : x
  2. Step 2: Convert to fraction form
    20,504.07/28,295.62 = 11,072.64/x
  3. Step 3: Cross multiply
    20,504.07x = 28,295.62 × 11,072.64
  4. Step 4: Simplify right side
    20,504.07x = 313,307,147.81
  5. Step 5: Solve for x
    x = 313,307,147.81/20,504.07
  6. Step 6: Final answer
    x = 15,280.24

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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.