Home / 12,672.24-17,485.20-7,963.20

Finding the Fourth Proportional to 12,672.24, 17,485.20 and 7,963.20

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Solution

The fourth proportional to 12,672.24, 17,485.20 and 7,963.20 is: 10,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.24 : 17,485.20 = 7,963.20 : x
  2. Step 2: Convert to fraction form
    12,672.24/17,485.20 = 7,963.20/x
  3. Step 3: Cross multiply
    12,672.24x = 17,485.20 × 7,963.20
  4. Step 4: Simplify right side
    12,672.24x = 139,238,144.64
  5. Step 5: Solve for x
    x = 139,238,144.64/12,672.24
  6. Step 6: Final answer
    x = 10,987.65

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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.