Home / 10,142.62-15,215.99-4,299.21

Finding the Fourth Proportional to 10,142.62, 15,215.99 and 4,299.21

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Solution

The fourth proportional to 10,142.62, 15,215.99 and 4,299.21 is: 6,449.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.62 : 15,215.99 = 4,299.21 : x
  2. Step 2: Convert to fraction form
    10,142.62/15,215.99 = 4,299.21/x
  3. Step 3: Cross multiply
    10,142.62x = 15,215.99 × 4,299.21
  4. Step 4: Simplify right side
    10,142.62x = 65,416,714.87
  5. Step 5: Solve for x
    x = 65,416,714.87/10,142.62
  6. Step 6: Final answer
    x = 6,449.69

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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.