Home / 13,679.21-20,528.03-5,358.20

Finding the Fourth Proportional to 13,679.21, 20,528.03 and 5,358.20

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Solution

The fourth proportional to 13,679.21, 20,528.03 and 5,358.20 is: 8,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.21 : 20,528.03 = 5,358.20 : x
  2. Step 2: Convert to fraction form
    13,679.21/20,528.03 = 5,358.20/x
  3. Step 3: Cross multiply
    13,679.21x = 20,528.03 × 5,358.20
  4. Step 4: Simplify right side
    13,679.21x = 109,993,201.10
  5. Step 5: Solve for x
    x = 109,993,201.10/13,679.21
  6. Step 6: Final answer
    x = 8,040.90

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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.