Home / 20,819.04-31,220.72-6,775.38

Finding the Fourth Proportional to 20,819.04, 31,220.72 and 6,775.38

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Solution

The fourth proportional to 20,819.04, 31,220.72 and 6,775.38 is: 10,160.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.04 : 31,220.72 = 6,775.38 : x
  2. Step 2: Convert to fraction form
    20,819.04/31,220.72 = 6,775.38/x
  3. Step 3: Cross multiply
    20,819.04x = 31,220.72 × 6,775.38
  4. Step 4: Simplify right side
    20,819.04x = 211,532,241.87
  5. Step 5: Solve for x
    x = 211,532,241.87/20,819.04
  6. Step 6: Final answer
    x = 10,160.52

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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.