Home / 12,243.80-16,899.10-7,773.68

Finding the Fourth Proportional to 12,243.80, 16,899.10 and 7,773.68

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Solution

The fourth proportional to 12,243.80, 16,899.10 and 7,773.68 is: 10,729.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.80 : 16,899.10 = 7,773.68 : x
  2. Step 2: Convert to fraction form
    12,243.80/16,899.10 = 7,773.68/x
  3. Step 3: Cross multiply
    12,243.80x = 16,899.10 × 7,773.68
  4. Step 4: Simplify right side
    12,243.80x = 131,368,195.69
  5. Step 5: Solve for x
    x = 131,368,195.69/12,243.80
  6. Step 6: Final answer
    x = 10,729.36

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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.