Home / 20,085.52-27,720.48-11,702.56

Finding the Fourth Proportional to 20,085.52, 27,720.48 and 11,702.56

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Solution

The fourth proportional to 20,085.52, 27,720.48 and 11,702.56 is: 16,150.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.52 : 27,720.48 = 11,702.56 : x
  2. Step 2: Convert to fraction form
    20,085.52/27,720.48 = 11,702.56/x
  3. Step 3: Cross multiply
    20,085.52x = 27,720.48 × 11,702.56
  4. Step 4: Simplify right side
    20,085.52x = 324,400,580.43
  5. Step 5: Solve for x
    x = 324,400,580.43/20,085.52
  6. Step 6: Final answer
    x = 16,150.97

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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.