Home / 12,125.97-16,733.66-6,820.78

Finding the Fourth Proportional to 12,125.97, 16,733.66 and 6,820.78

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Solution

The fourth proportional to 12,125.97, 16,733.66 and 6,820.78 is: 9,412.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.97 : 16,733.66 = 6,820.78 : x
  2. Step 2: Convert to fraction form
    12,125.97/16,733.66 = 6,820.78/x
  3. Step 3: Cross multiply
    12,125.97x = 16,733.66 × 6,820.78
  4. Step 4: Simplify right side
    12,125.97x = 114,136,596.40
  5. Step 5: Solve for x
    x = 114,136,596.40/12,125.97
  6. Step 6: Final answer
    x = 9,412.58

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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.