Home / 27,965.29-38,583.41-15,863.78

Finding the Fourth Proportional to 27,965.29, 38,583.41 and 15,863.78

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Solution

The fourth proportional to 27,965.29, 38,583.41 and 15,863.78 is: 21,887.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,965.29 : 38,583.41 = 15,863.78 : x
  2. Step 2: Convert to fraction form
    27,965.29/38,583.41 = 15,863.78/x
  3. Step 3: Cross multiply
    27,965.29x = 38,583.41 × 15,863.78
  4. Step 4: Simplify right side
    27,965.29x = 612,078,727.89
  5. Step 5: Solve for x
    x = 612,078,727.89/27,965.29
  6. Step 6: Final answer
    x = 21,887.09

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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.