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Finding the Fourth Proportional to 12,636.66, 17,438.52 and 7,334.58

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Solution

The fourth proportional to 12,636.66, 17,438.52 and 7,334.58 is: 10,121.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.66 : 17,438.52 = 7,334.58 : x
  2. Step 2: Convert to fraction form
    12,636.66/17,438.52 = 7,334.58/x
  3. Step 3: Cross multiply
    12,636.66x = 17,438.52 × 7,334.58
  4. Step 4: Simplify right side
    12,636.66x = 127,904,220.02
  5. Step 5: Solve for x
    x = 127,904,220.02/12,636.66
  6. Step 6: Final answer
    x = 10,121.68

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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.