Home / 27,640.09-38,144.35-15,705.44

Finding the Fourth Proportional to 27,640.09, 38,144.35 and 15,705.44

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Solution

The fourth proportional to 27,640.09, 38,144.35 and 15,705.44 is: 21,674.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.09 : 38,144.35 = 15,705.44 : x
  2. Step 2: Convert to fraction form
    27,640.09/38,144.35 = 15,705.44/x
  3. Step 3: Cross multiply
    27,640.09x = 38,144.35 × 15,705.44
  4. Step 4: Simplify right side
    27,640.09x = 599,073,721.74
  5. Step 5: Solve for x
    x = 599,073,721.74/27,640.09
  6. Step 6: Final answer
    x = 21,674.09

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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.