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Finding the Fourth Proportional to 9,000.99, 13,481.73 and 7,423.20

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Solution

The fourth proportional to 9,000.99, 13,481.73 and 7,423.20 is: 11,118.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.99 : 13,481.73 = 7,423.20 : x
  2. Step 2: Convert to fraction form
    9,000.99/13,481.73 = 7,423.20/x
  3. Step 3: Cross multiply
    9,000.99x = 13,481.73 × 7,423.20
  4. Step 4: Simplify right side
    9,000.99x = 100,077,578.14
  5. Step 5: Solve for x
    x = 100,077,578.14/9,000.99
  6. Step 6: Final answer
    x = 11,118.51

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Half scale
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Double scale
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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.