Home / 27,640.36-38,143.82-15,704.35

Finding the Fourth Proportional to 27,640.36, 38,143.82 and 15,704.35

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Solution

The fourth proportional to 27,640.36, 38,143.82 and 15,704.35 is: 21,672.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.36 : 38,143.82 = 15,704.35 : x
  2. Step 2: Convert to fraction form
    27,640.36/38,143.82 = 15,704.35/x
  3. Step 3: Cross multiply
    27,640.36x = 38,143.82 × 15,704.35
  4. Step 4: Simplify right side
    27,640.36x = 599,023,899.62
  5. Step 5: Solve for x
    x = 599,023,899.62/27,640.36
  6. Step 6: Final answer
    x = 21,672.07

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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.