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Finding the Fourth Proportional to 11,309.36, 15,605.06 and 7,059.69

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Solution

The fourth proportional to 11,309.36, 15,605.06 and 7,059.69 is: 9,741.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,309.36 : 15,605.06 = 7,059.69 : x
  2. Step 2: Convert to fraction form
    11,309.36/15,605.06 = 7,059.69/x
  3. Step 3: Cross multiply
    11,309.36x = 15,605.06 × 7,059.69
  4. Step 4: Simplify right side
    11,309.36x = 110,166,850.73
  5. Step 5: Solve for x
    x = 110,166,850.73/11,309.36
  6. Step 6: Final answer
    x = 9,741.21

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.