Home / 13,388.64-20,082.96-12,576.72

Finding the Fourth Proportional to 13,388.64, 20,082.96 and 12,576.72

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Solution

The fourth proportional to 13,388.64, 20,082.96 and 12,576.72 is: 18,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.64 : 20,082.96 = 12,576.72 : x
  2. Step 2: Convert to fraction form
    13,388.64/20,082.96 = 12,576.72/x
  3. Step 3: Cross multiply
    13,388.64x = 20,082.96 × 12,576.72
  4. Step 4: Simplify right side
    13,388.64x = 252,577,764.69
  5. Step 5: Solve for x
    x = 252,577,764.69/13,388.64
  6. Step 6: Final answer
    x = 18,865.08

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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.