Home / 12,889.12-17,786.96-7,300.64

Finding the Fourth Proportional to 12,889.12, 17,786.96 and 7,300.64

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Solution

The fourth proportional to 12,889.12, 17,786.96 and 7,300.64 is: 10,074.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.12 : 17,786.96 = 7,300.64 : x
  2. Step 2: Convert to fraction form
    12,889.12/17,786.96 = 7,300.64/x
  3. Step 3: Cross multiply
    12,889.12x = 17,786.96 × 7,300.64
  4. Step 4: Simplify right side
    12,889.12x = 129,856,191.65
  5. Step 5: Solve for x
    x = 129,856,191.65/12,889.12
  6. Step 6: Final answer
    x = 10,074.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.