Home / 10,215.96-15,324.82-2,820.42

Finding the Fourth Proportional to 10,215.96, 15,324.82 and 2,820.42

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Solution

The fourth proportional to 10,215.96, 15,324.82 and 2,820.42 is: 4,230.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.96 : 15,324.82 = 2,820.42 : x
  2. Step 2: Convert to fraction form
    10,215.96/15,324.82 = 2,820.42/x
  3. Step 3: Cross multiply
    10,215.96x = 15,324.82 × 2,820.42
  4. Step 4: Simplify right side
    10,215.96x = 43,222,432.35
  5. Step 5: Solve for x
    x = 43,222,432.35/10,215.96
  6. Step 6: Final answer
    x = 4,230.87

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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.