Home / 27,640.58-38,145.03-15,705.94

Finding the Fourth Proportional to 27,640.58, 38,145.03 and 15,705.94

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Solution

The fourth proportional to 27,640.58, 38,145.03 and 15,705.94 is: 21,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.58 : 38,145.03 = 15,705.94 : x
  2. Step 2: Convert to fraction form
    27,640.58/38,145.03 = 15,705.94/x
  3. Step 3: Cross multiply
    27,640.58x = 38,145.03 × 15,705.94
  4. Step 4: Simplify right side
    27,640.58x = 599,103,552.48
  5. Step 5: Solve for x
    x = 599,103,552.48/27,640.58
  6. Step 6: Final answer
    x = 21,674.78

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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.