Home / 19,519.49-26,934-11,858.78

Finding the Fourth Proportional to 19,519.49, 26,934 and 11,858.78

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Solution

The fourth proportional to 19,519.49, 26,934 and 11,858.78 is: 16,363.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,519.49 : 26,934 = 11,858.78 : x
  2. Step 2: Convert to fraction form
    19,519.49/26,934 = 11,858.78/x
  3. Step 3: Cross multiply
    19,519.49x = 26,934 × 11,858.78
  4. Step 4: Simplify right side
    19,519.49x = 319,404,380.52
  5. Step 5: Solve for x
    x = 319,404,380.52/19,519.49
  6. Step 6: Final answer
    x = 16,363.36

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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.