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Finding the Fourth Proportional to 12,671.94, 17,489.44 and 7,369.88

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Solution

The fourth proportional to 12,671.94, 17,489.44 and 7,369.88 is: 10,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.94 : 17,489.44 = 7,369.88 : x
  2. Step 2: Convert to fraction form
    12,671.94/17,489.44 = 7,369.88/x
  3. Step 3: Cross multiply
    12,671.94x = 17,489.44 × 7,369.88
  4. Step 4: Simplify right side
    12,671.94x = 128,895,127.00
  5. Step 5: Solve for x
    x = 128,895,127.00/12,671.94
  6. Step 6: Final answer
    x = 10,171.70

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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.