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Finding the Fourth Proportional to 12,684.65, 17,495.35 and 11,250.68

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Solution

The fourth proportional to 12,684.65, 17,495.35 and 11,250.68 is: 15,517.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.65 : 17,495.35 = 11,250.68 : x
  2. Step 2: Convert to fraction form
    12,684.65/17,495.35 = 11,250.68/x
  3. Step 3: Cross multiply
    12,684.65x = 17,495.35 × 11,250.68
  4. Step 4: Simplify right side
    12,684.65x = 196,834,599.95
  5. Step 5: Solve for x
    x = 196,834,599.95/12,684.65
  6. Step 6: Final answer
    x = 15,517.54

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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.