Home / 11,019.80-16,505.40-6,629.60

Finding the Fourth Proportional to 11,019.80, 16,505.40 and 6,629.60

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Solution

The fourth proportional to 11,019.80, 16,505.40 and 6,629.60 is: 9,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,019.80 : 16,505.40 = 6,629.60 : x
  2. Step 2: Convert to fraction form
    11,019.80/16,505.40 = 6,629.60/x
  3. Step 3: Cross multiply
    11,019.80x = 16,505.40 × 6,629.60
  4. Step 4: Simplify right side
    11,019.80x = 109,424,199.84
  5. Step 5: Solve for x
    x = 109,424,199.84/11,019.80
  6. Step 6: Final answer
    x = 9,929.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.