Home / 13,709.85-20,563.35-5,388.72

Finding the Fourth Proportional to 13,709.85, 20,563.35 and 5,388.72

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Solution

The fourth proportional to 13,709.85, 20,563.35 and 5,388.72 is: 8,082.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.85 : 20,563.35 = 5,388.72 : x
  2. Step 2: Convert to fraction form
    13,709.85/20,563.35 = 5,388.72/x
  3. Step 3: Cross multiply
    13,709.85x = 20,563.35 × 5,388.72
  4. Step 4: Simplify right side
    13,709.85x = 110,810,135.41
  5. Step 5: Solve for x
    x = 110,810,135.41/13,709.85
  6. Step 6: Final answer
    x = 8,082.52

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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.