Home / 12,645.78-19,042.85-11,021.28

Finding the Fourth Proportional to 12,645.78, 19,042.85 and 11,021.28

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Solution

The fourth proportional to 12,645.78, 19,042.85 and 11,021.28 is: 16,596.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.78 : 19,042.85 = 11,021.28 : x
  2. Step 2: Convert to fraction form
    12,645.78/19,042.85 = 11,021.28/x
  3. Step 3: Cross multiply
    12,645.78x = 19,042.85 × 11,021.28
  4. Step 4: Simplify right side
    12,645.78x = 209,876,526.74
  5. Step 5: Solve for x
    x = 209,876,526.74/12,645.78
  6. Step 6: Final answer
    x = 16,596.57

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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.