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Finding the Fourth Proportional to 11,010.20, 16,515.30 and 7,300.40

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Solution

The fourth proportional to 11,010.20, 16,515.30 and 7,300.40 is: 10,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,010.20 : 16,515.30 = 7,300.40 : x
  2. Step 2: Convert to fraction form
    11,010.20/16,515.30 = 7,300.40/x
  3. Step 3: Cross multiply
    11,010.20x = 16,515.30 × 7,300.40
  4. Step 4: Simplify right side
    11,010.20x = 120,568,296.12
  5. Step 5: Solve for x
    x = 120,568,296.12/11,010.20
  6. Step 6: Final answer
    x = 10,950.60

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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.