Home / 11,861.14-17,820.90-8,930.56

Finding the Fourth Proportional to 11,861.14, 17,820.90 and 8,930.56

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Solution

The fourth proportional to 11,861.14, 17,820.90 and 8,930.56 is: 13,417.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.14 : 17,820.90 = 8,930.56 : x
  2. Step 2: Convert to fraction form
    11,861.14/17,820.90 = 8,930.56/x
  3. Step 3: Cross multiply
    11,861.14x = 17,820.90 × 8,930.56
  4. Step 4: Simplify right side
    11,861.14x = 159,150,616.70
  5. Step 5: Solve for x
    x = 159,150,616.70/11,861.14
  6. Step 6: Final answer
    x = 13,417.82

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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.