Home / 20,804.07-28,709.01-11,372.64

Finding the Fourth Proportional to 20,804.07, 28,709.01 and 11,372.64

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Solution

The fourth proportional to 20,804.07, 28,709.01 and 11,372.64 is: 15,693.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.07 : 28,709.01 = 11,372.64 : x
  2. Step 2: Convert to fraction form
    20,804.07/28,709.01 = 11,372.64/x
  3. Step 3: Cross multiply
    20,804.07x = 28,709.01 × 11,372.64
  4. Step 4: Simplify right side
    20,804.07x = 326,497,235.49
  5. Step 5: Solve for x
    x = 326,497,235.49/20,804.07
  6. Step 6: Final answer
    x = 15,693.91

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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.