Home / 13,410.21-20,115.21-5,619.03

Finding the Fourth Proportional to 13,410.21, 20,115.21 and 5,619.03

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Solution

The fourth proportional to 13,410.21, 20,115.21 and 5,619.03 is: 8,428.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.21 : 20,115.21 = 5,619.03 : x
  2. Step 2: Convert to fraction form
    13,410.21/20,115.21 = 5,619.03/x
  3. Step 3: Cross multiply
    13,410.21x = 20,115.21 × 5,619.03
  4. Step 4: Simplify right side
    13,410.21x = 113,027,968.45
  5. Step 5: Solve for x
    x = 113,027,968.45/13,410.21
  6. Step 6: Final answer
    x = 8,428.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.