Home / 12,129.30-16,735.92-7,092.55

Finding the Fourth Proportional to 12,129.30, 16,735.92 and 7,092.55

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Solution

The fourth proportional to 12,129.30, 16,735.92 and 7,092.55 is: 9,786.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.30 : 16,735.92 = 7,092.55 : x
  2. Step 2: Convert to fraction form
    12,129.30/16,735.92 = 7,092.55/x
  3. Step 3: Cross multiply
    12,129.30x = 16,735.92 × 7,092.55
  4. Step 4: Simplify right side
    12,129.30x = 118,700,284.88
  5. Step 5: Solve for x
    x = 118,700,284.88/12,129.30
  6. Step 6: Final answer
    x = 9,786.24

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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.