Home / 27,640.86-38,144.79-15,704.52

Finding the Fourth Proportional to 27,640.86, 38,144.79 and 15,704.52

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Solution

The fourth proportional to 27,640.86, 38,144.79 and 15,704.52 is: 21,672.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.86 : 38,144.79 = 15,704.52 : x
  2. Step 2: Convert to fraction form
    27,640.86/38,144.79 = 15,704.52/x
  3. Step 3: Cross multiply
    27,640.86x = 38,144.79 × 15,704.52
  4. Step 4: Simplify right side
    27,640.86x = 599,045,617.45
  5. Step 5: Solve for x
    x = 599,045,617.45/27,640.86
  6. Step 6: Final answer
    x = 21,672.47

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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.