Home / 11,315.66-15,611.33-8,338.60

Finding the Fourth Proportional to 11,315.66, 15,611.33 and 8,338.60

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Solution

The fourth proportional to 11,315.66, 15,611.33 and 8,338.60 is: 11,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.66 : 15,611.33 = 8,338.60 : x
  2. Step 2: Convert to fraction form
    11,315.66/15,611.33 = 8,338.60/x
  3. Step 3: Cross multiply
    11,315.66x = 15,611.33 × 8,338.60
  4. Step 4: Simplify right side
    11,315.66x = 130,176,516.59
  5. Step 5: Solve for x
    x = 130,176,516.59/11,315.66
  6. Step 6: Final answer
    x = 11,504.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.