Home / 12,668.24-18,984-8,715.44

Finding the Fourth Proportional to 12,668.24, 18,984 and 8,715.44

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Solution

The fourth proportional to 12,668.24, 18,984 and 8,715.44 is: 13,060.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.24 : 18,984 = 8,715.44 : x
  2. Step 2: Convert to fraction form
    12,668.24/18,984 = 8,715.44/x
  3. Step 3: Cross multiply
    12,668.24x = 18,984 × 8,715.44
  4. Step 4: Simplify right side
    12,668.24x = 165,453,912.96
  5. Step 5: Solve for x
    x = 165,453,912.96/12,668.24
  6. Step 6: Final answer
    x = 13,060.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.