Home / 12,129.21-16,738.25-6,823.92

Finding the Fourth Proportional to 12,129.21, 16,738.25 and 6,823.92

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Solution

The fourth proportional to 12,129.21, 16,738.25 and 6,823.92 is: 9,416.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.21 : 16,738.25 = 6,823.92 : x
  2. Step 2: Convert to fraction form
    12,129.21/16,738.25 = 6,823.92/x
  3. Step 3: Cross multiply
    12,129.21x = 16,738.25 × 6,823.92
  4. Step 4: Simplify right side
    12,129.21x = 114,220,444.82
  5. Step 5: Solve for x
    x = 114,220,444.82/12,129.21
  6. Step 6: Final answer
    x = 9,416.97

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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.