Home / 19,539-26,957.49-11,981.55

Finding the Fourth Proportional to 19,539, 26,957.49 and 11,981.55

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Solution

The fourth proportional to 19,539, 26,957.49 and 11,981.55 is: 16,530.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,539 : 26,957.49 = 11,981.55 : x
  2. Step 2: Convert to fraction form
    19,539/26,957.49 = 11,981.55/x
  3. Step 3: Cross multiply
    19,539x = 26,957.49 × 11,981.55
  4. Step 4: Simplify right side
    19,539x = 322,992,514.31
  5. Step 5: Solve for x
    x = 322,992,514.31/19,539
  6. Step 6: Final answer
    x = 16,530.66

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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.