Home / 10,611.36-15,919.60-3,215.38

Finding the Fourth Proportional to 10,611.36, 15,919.60 and 3,215.38

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Solution

The fourth proportional to 10,611.36, 15,919.60 and 3,215.38 is: 4,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611.36 : 15,919.60 = 3,215.38 : x
  2. Step 2: Convert to fraction form
    10,611.36/15,919.60 = 3,215.38/x
  3. Step 3: Cross multiply
    10,611.36x = 15,919.60 × 3,215.38
  4. Step 4: Simplify right side
    10,611.36x = 51,187,563.45
  5. Step 5: Solve for x
    x = 51,187,563.45/10,611.36
  6. Step 6: Final answer
    x = 4,823.85

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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.