Home / 11,915.12-16,442.78-6,609.93

Finding the Fourth Proportional to 11,915.12, 16,442.78 and 6,609.93

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Solution

The fourth proportional to 11,915.12, 16,442.78 and 6,609.93 is: 9,121.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.12 : 16,442.78 = 6,609.93 : x
  2. Step 2: Convert to fraction form
    11,915.12/16,442.78 = 6,609.93/x
  3. Step 3: Cross multiply
    11,915.12x = 16,442.78 × 6,609.93
  4. Step 4: Simplify right side
    11,915.12x = 108,685,591.76
  5. Step 5: Solve for x
    x = 108,685,591.76/11,915.12
  6. Step 6: Final answer
    x = 9,121.66

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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.