Home / 11,139.72-16,709.62-9,049.88

Finding the Fourth Proportional to 11,139.72, 16,709.62 and 9,049.88

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Solution

The fourth proportional to 11,139.72, 16,709.62 and 9,049.88 is: 13,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.72 : 16,709.62 = 9,049.88 : x
  2. Step 2: Convert to fraction form
    11,139.72/16,709.62 = 9,049.88/x
  3. Step 3: Cross multiply
    11,139.72x = 16,709.62 × 9,049.88
  4. Step 4: Simplify right side
    11,139.72x = 151,220,055.85
  5. Step 5: Solve for x
    x = 151,220,055.85/11,139.72
  6. Step 6: Final answer
    x = 13,574.85

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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.