Home / 11,221.23-15,491.25-8,697.68

Finding the Fourth Proportional to 11,221.23, 15,491.25 and 8,697.68

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Solution

The fourth proportional to 11,221.23, 15,491.25 and 8,697.68 is: 12,007.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.23 : 15,491.25 = 8,697.68 : x
  2. Step 2: Convert to fraction form
    11,221.23/15,491.25 = 8,697.68/x
  3. Step 3: Cross multiply
    11,221.23x = 15,491.25 × 8,697.68
  4. Step 4: Simplify right side
    11,221.23x = 134,737,915.94
  5. Step 5: Solve for x
    x = 134,737,915.94/11,221.23
  6. Step 6: Final answer
    x = 12,007.41

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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.