Home / 21,170.52-31,755.78-5,588.28

Finding the Fourth Proportional to 21,170.52, 31,755.78 and 5,588.28

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Solution

The fourth proportional to 21,170.52, 31,755.78 and 5,588.28 is: 8,382.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.52 : 31,755.78 = 5,588.28 : x
  2. Step 2: Convert to fraction form
    21,170.52/31,755.78 = 5,588.28/x
  3. Step 3: Cross multiply
    21,170.52x = 31,755.78 × 5,588.28
  4. Step 4: Simplify right side
    21,170.52x = 177,460,190.26
  5. Step 5: Solve for x
    x = 177,460,190.26/21,170.52
  6. Step 6: Final answer
    x = 8,382.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.