Home / 20,580.07-28,399.09-11,627.95

Finding the Fourth Proportional to 20,580.07, 28,399.09 and 11,627.95

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Solution

The fourth proportional to 20,580.07, 28,399.09 and 11,627.95 is: 16,045.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.07 : 28,399.09 = 11,627.95 : x
  2. Step 2: Convert to fraction form
    20,580.07/28,399.09 = 11,627.95/x
  3. Step 3: Cross multiply
    20,580.07x = 28,399.09 × 11,627.95
  4. Step 4: Simplify right side
    20,580.07x = 330,223,198.57
  5. Step 5: Solve for x
    x = 330,223,198.57/20,580.07
  6. Step 6: Final answer
    x = 16,045.78

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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.