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Finding the Fourth Proportional to 12,726.88, 17,563.10 and 7,137.88

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Solution

The fourth proportional to 12,726.88, 17,563.10 and 7,137.88 is: 9,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.88 : 17,563.10 = 7,137.88 : x
  2. Step 2: Convert to fraction form
    12,726.88/17,563.10 = 7,137.88/x
  3. Step 3: Cross multiply
    12,726.88x = 17,563.10 × 7,137.88
  4. Step 4: Simplify right side
    12,726.88x = 125,363,220.63
  5. Step 5: Solve for x
    x = 125,363,220.63/12,726.88
  6. Step 6: Final answer
    x = 9,850.27

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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.