Home / 11,689.56-16,125.57-7,912.89

Finding the Fourth Proportional to 11,689.56, 16,125.57 and 7,912.89

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Solution

The fourth proportional to 11,689.56, 16,125.57 and 7,912.89 is: 10,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.56 : 16,125.57 = 7,912.89 : x
  2. Step 2: Convert to fraction form
    11,689.56/16,125.57 = 7,912.89/x
  3. Step 3: Cross multiply
    11,689.56x = 16,125.57 × 7,912.89
  4. Step 4: Simplify right side
    11,689.56x = 127,599,861.60
  5. Step 5: Solve for x
    x = 127,599,861.60/11,689.56
  6. Step 6: Final answer
    x = 10,915.71

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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.