Home / 12,121.53-16,725.77-6,816.03

Finding the Fourth Proportional to 12,121.53, 16,725.77 and 6,816.03

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Solution

The fourth proportional to 12,121.53, 16,725.77 and 6,816.03 is: 9,405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.53 : 16,725.77 = 6,816.03 : x
  2. Step 2: Convert to fraction form
    12,121.53/16,725.77 = 6,816.03/x
  3. Step 3: Cross multiply
    12,121.53x = 16,725.77 × 6,816.03
  4. Step 4: Simplify right side
    12,121.53x = 114,003,353.76
  5. Step 5: Solve for x
    x = 114,003,353.76/12,121.53
  6. Step 6: Final answer
    x = 9,405.03

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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.