Home / 12,645.28-19,042.09-11,020.78

Finding the Fourth Proportional to 12,645.28, 19,042.09 and 11,020.78

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Solution

The fourth proportional to 12,645.28, 19,042.09 and 11,020.78 is: 16,595.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.28 : 19,042.09 = 11,020.78 : x
  2. Step 2: Convert to fraction form
    12,645.28/19,042.09 = 11,020.78/x
  3. Step 3: Cross multiply
    12,645.28x = 19,042.09 × 11,020.78
  4. Step 4: Simplify right side
    12,645.28x = 209,858,684.63
  5. Step 5: Solve for x
    x = 209,858,684.63/12,645.28
  6. Step 6: Final answer
    x = 16,595.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.