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Finding the Fourth Proportional to 12,491.06, 17,235.11 and 7,453.67

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Solution

The fourth proportional to 12,491.06, 17,235.11 and 7,453.67 is: 10,284.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.06 : 17,235.11 = 7,453.67 : x
  2. Step 2: Convert to fraction form
    12,491.06/17,235.11 = 7,453.67/x
  3. Step 3: Cross multiply
    12,491.06x = 17,235.11 × 7,453.67
  4. Step 4: Simplify right side
    12,491.06x = 128,464,754.81
  5. Step 5: Solve for x
    x = 128,464,754.81/12,491.06
  6. Step 6: Final answer
    x = 10,284.54

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.