Home / 11,315.52-15,611.16-8,338.47

Finding the Fourth Proportional to 11,315.52, 15,611.16 and 8,338.47

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Solution

The fourth proportional to 11,315.52, 15,611.16 and 8,338.47 is: 11,503.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.52 : 15,611.16 = 8,338.47 : x
  2. Step 2: Convert to fraction form
    11,315.52/15,611.16 = 8,338.47/x
  3. Step 3: Cross multiply
    11,315.52x = 15,611.16 × 8,338.47
  4. Step 4: Simplify right side
    11,315.52x = 130,173,189.33
  5. Step 5: Solve for x
    x = 130,173,189.33/11,315.52
  6. Step 6: Final answer
    x = 11,503.95

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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.