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Finding the Fourth Proportional to 11,040.70, 16,561.05 and 7,104.10

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Solution

The fourth proportional to 11,040.70, 16,561.05 and 7,104.10 is: 10,656.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,040.70 : 16,561.05 = 7,104.10 : x
  2. Step 2: Convert to fraction form
    11,040.70/16,561.05 = 7,104.10/x
  3. Step 3: Cross multiply
    11,040.70x = 16,561.05 × 7,104.10
  4. Step 4: Simplify right side
    11,040.70x = 117,651,355.31
  5. Step 5: Solve for x
    x = 117,651,355.31/11,040.70
  6. Step 6: Final answer
    x = 10,656.15

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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.