Home / 20,801.14-28,707.57-11,851.54

Finding the Fourth Proportional to 20,801.14, 28,707.57 and 11,851.54

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Solution

The fourth proportional to 20,801.14, 28,707.57 and 11,851.54 is: 16,356.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.14 : 28,707.57 = 11,851.54 : x
  2. Step 2: Convert to fraction form
    20,801.14/28,707.57 = 11,851.54/x
  3. Step 3: Cross multiply
    20,801.14x = 28,707.57 × 11,851.54
  4. Step 4: Simplify right side
    20,801.14x = 340,228,914.16
  5. Step 5: Solve for x
    x = 340,228,914.16/20,801.14
  6. Step 6: Final answer
    x = 16,356.26

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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.