Home / 20,882.06-31,316.40-6,838.28

Finding the Fourth Proportional to 20,882.06, 31,316.40 and 6,838.28

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Solution

The fourth proportional to 20,882.06, 31,316.40 and 6,838.28 is: 10,255.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.06 : 31,316.40 = 6,838.28 : x
  2. Step 2: Convert to fraction form
    20,882.06/31,316.40 = 6,838.28/x
  3. Step 3: Cross multiply
    20,882.06x = 31,316.40 × 6,838.28
  4. Step 4: Simplify right side
    20,882.06x = 214,150,311.79
  5. Step 5: Solve for x
    x = 214,150,311.79/20,882.06
  6. Step 6: Final answer
    x = 10,255.23

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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.