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Finding the Fourth Proportional to 12,696.35, 17,518.68 and 7,317.54

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Solution

The fourth proportional to 12,696.35, 17,518.68 and 7,317.54 is: 10,096.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.35 : 17,518.68 = 7,317.54 : x
  2. Step 2: Convert to fraction form
    12,696.35/17,518.68 = 7,317.54/x
  3. Step 3: Cross multiply
    12,696.35x = 17,518.68 × 7,317.54
  4. Step 4: Simplify right side
    12,696.35x = 128,193,641.65
  5. Step 5: Solve for x
    x = 128,193,641.65/12,696.35
  6. Step 6: Final answer
    x = 10,096.89

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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.