Home / 10,815.32-16,173.56-7,863.68

Finding the Fourth Proportional to 10,815.32, 16,173.56 and 7,863.68

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Solution

The fourth proportional to 10,815.32, 16,173.56 and 7,863.68 is: 11,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.32 : 16,173.56 = 7,863.68 : x
  2. Step 2: Convert to fraction form
    10,815.32/16,173.56 = 7,863.68/x
  3. Step 3: Cross multiply
    10,815.32x = 16,173.56 × 7,863.68
  4. Step 4: Simplify right side
    10,815.32x = 127,183,700.30
  5. Step 5: Solve for x
    x = 127,183,700.30/10,815.32
  6. Step 6: Final answer
    x = 11,759.59

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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.