Home / 11,189.92-15,436.90-8,954.94

Finding the Fourth Proportional to 11,189.92, 15,436.90 and 8,954.94

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Solution

The fourth proportional to 11,189.92, 15,436.90 and 8,954.94 is: 12,353.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.92 : 15,436.90 = 8,954.94 : x
  2. Step 2: Convert to fraction form
    11,189.92/15,436.90 = 8,954.94/x
  3. Step 3: Cross multiply
    11,189.92x = 15,436.90 × 8,954.94
  4. Step 4: Simplify right side
    11,189.92x = 138,236,513.29
  5. Step 5: Solve for x
    x = 138,236,513.29/11,189.92
  6. Step 6: Final answer
    x = 12,353.66

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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.