Home / 12,145.09-16,767.96-9,912.29

Finding the Fourth Proportional to 12,145.09, 16,767.96 and 9,912.29

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Solution

The fourth proportional to 12,145.09, 16,767.96 and 9,912.29 is: 13,685.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.09 : 16,767.96 = 9,912.29 : x
  2. Step 2: Convert to fraction form
    12,145.09/16,767.96 = 9,912.29/x
  3. Step 3: Cross multiply
    12,145.09x = 16,767.96 × 9,912.29
  4. Step 4: Simplify right side
    12,145.09x = 166,208,911.29
  5. Step 5: Solve for x
    x = 166,208,911.29/12,145.09
  6. Step 6: Final answer
    x = 13,685.28

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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.