Home / 12,129.83-16,739.17-6,824.65

Finding the Fourth Proportional to 12,129.83, 16,739.17 and 6,824.65

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Solution

The fourth proportional to 12,129.83, 16,739.17 and 6,824.65 is: 9,418.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.83 : 16,739.17 = 6,824.65 : x
  2. Step 2: Convert to fraction form
    12,129.83/16,739.17 = 6,824.65/x
  3. Step 3: Cross multiply
    12,129.83x = 16,739.17 × 6,824.65
  4. Step 4: Simplify right side
    12,129.83x = 114,238,893.88
  5. Step 5: Solve for x
    x = 114,238,893.88/12,129.83
  6. Step 6: Final answer
    x = 9,418.01

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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.