Home / 12,629.91-17,420.26-10,728.30

Finding the Fourth Proportional to 12,629.91, 17,420.26 and 10,728.30

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Solution

The fourth proportional to 12,629.91, 17,420.26 and 10,728.30 is: 14,797.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.91 : 17,420.26 = 10,728.30 : x
  2. Step 2: Convert to fraction form
    12,629.91/17,420.26 = 10,728.30/x
  3. Step 3: Cross multiply
    12,629.91x = 17,420.26 × 10,728.30
  4. Step 4: Simplify right side
    12,629.91x = 186,889,775.36
  5. Step 5: Solve for x
    x = 186,889,775.36/12,629.91
  6. Step 6: Final answer
    x = 14,797.40

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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.