Home / 20,837.92-31,256.79-5,255.50

Finding the Fourth Proportional to 20,837.92, 31,256.79 and 5,255.50

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Solution

The fourth proportional to 20,837.92, 31,256.79 and 5,255.50 is: 7,883.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.92 : 31,256.79 = 5,255.50 : x
  2. Step 2: Convert to fraction form
    20,837.92/31,256.79 = 5,255.50/x
  3. Step 3: Cross multiply
    20,837.92x = 31,256.79 × 5,255.50
  4. Step 4: Simplify right side
    20,837.92x = 164,270,059.85
  5. Step 5: Solve for x
    x = 164,270,059.85/20,837.92
  6. Step 6: Final answer
    x = 7,883.23

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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.