Home / 13,620.21-18,796.60-7,571.10

Finding the Fourth Proportional to 13,620.21, 18,796.60 and 7,571.10

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Solution

The fourth proportional to 13,620.21, 18,796.60 and 7,571.10 is: 10,448.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.21 : 18,796.60 = 7,571.10 : x
  2. Step 2: Convert to fraction form
    13,620.21/18,796.60 = 7,571.10/x
  3. Step 3: Cross multiply
    13,620.21x = 18,796.60 × 7,571.10
  4. Step 4: Simplify right side
    13,620.21x = 142,310,938.26
  5. Step 5: Solve for x
    x = 142,310,938.26/13,620.21
  6. Step 6: Final answer
    x = 10,448.51

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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.