Home / 11,493.90-15,861.38-6,389.73

Finding the Fourth Proportional to 11,493.90, 15,861.38 and 6,389.73

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Solution

The fourth proportional to 11,493.90, 15,861.38 and 6,389.73 is: 8,817.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,493.90 : 15,861.38 = 6,389.73 : x
  2. Step 2: Convert to fraction form
    11,493.90/15,861.38 = 6,389.73/x
  3. Step 3: Cross multiply
    11,493.90x = 15,861.38 × 6,389.73
  4. Step 4: Simplify right side
    11,493.90x = 101,349,903.68
  5. Step 5: Solve for x
    x = 101,349,903.68/11,493.90
  6. Step 6: Final answer
    x = 8,817.71

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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.