Home / 10,915.92-15,047.64-8,553.96

Finding the Fourth Proportional to 10,915.92, 15,047.64 and 8,553.96

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Solution

The fourth proportional to 10,915.92, 15,047.64 and 8,553.96 is: 11,791.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.92 : 15,047.64 = 8,553.96 : x
  2. Step 2: Convert to fraction form
    10,915.92/15,047.64 = 8,553.96/x
  3. Step 3: Cross multiply
    10,915.92x = 15,047.64 × 8,553.96
  4. Step 4: Simplify right side
    10,915.92x = 128,716,910.65
  5. Step 5: Solve for x
    x = 128,716,910.65/10,915.92
  6. Step 6: Final answer
    x = 11,791.67

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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.