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Finding the Fourth Proportional to 11,079.70, 16,619.55 and 7,369.90

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Solution

The fourth proportional to 11,079.70, 16,619.55 and 7,369.90 is: 11,054.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,079.70 : 16,619.55 = 7,369.90 : x
  2. Step 2: Convert to fraction form
    11,079.70/16,619.55 = 7,369.90/x
  3. Step 3: Cross multiply
    11,079.70x = 16,619.55 × 7,369.90
  4. Step 4: Simplify right side
    11,079.70x = 122,484,421.55
  5. Step 5: Solve for x
    x = 122,484,421.55/11,079.70
  6. Step 6: Final answer
    x = 11,054.85

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Similar ratio
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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.