Home / 19,088.09-26,366.82-15,911.78

Finding the Fourth Proportional to 19,088.09, 26,366.82 and 15,911.78

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Solution

The fourth proportional to 19,088.09, 26,366.82 and 15,911.78 is: 21,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,088.09 : 26,366.82 = 15,911.78 : x
  2. Step 2: Convert to fraction form
    19,088.09/26,366.82 = 15,911.78/x
  3. Step 3: Cross multiply
    19,088.09x = 26,366.82 × 15,911.78
  4. Step 4: Simplify right side
    19,088.09x = 419,542,907.31
  5. Step 5: Solve for x
    x = 419,542,907.31/19,088.09
  6. Step 6: Final answer
    x = 21,979.31

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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.