Home / 13,211.28-19,794.64-6,538.88

Finding the Fourth Proportional to 13,211.28, 19,794.64 and 6,538.88

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Solution

The fourth proportional to 13,211.28, 19,794.64 and 6,538.88 is: 9,797.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.28 : 19,794.64 = 6,538.88 : x
  2. Step 2: Convert to fraction form
    13,211.28/19,794.64 = 6,538.88/x
  3. Step 3: Cross multiply
    13,211.28x = 19,794.64 × 6,538.88
  4. Step 4: Simplify right side
    13,211.28x = 129,434,796.48
  5. Step 5: Solve for x
    x = 129,434,796.48/13,211.28
  6. Step 6: Final answer
    x = 9,797.29

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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.