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Finding the Fourth Proportional to 12,726.72, 17,562.84 and 7,137.84

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Solution

The fourth proportional to 12,726.72, 17,562.84 and 7,137.84 is: 9,850.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.72 : 17,562.84 = 7,137.84 : x
  2. Step 2: Convert to fraction form
    12,726.72/17,562.84 = 7,137.84/x
  3. Step 3: Cross multiply
    12,726.72x = 17,562.84 × 7,137.84
  4. Step 4: Simplify right side
    12,726.72x = 125,360,741.87
  5. Step 5: Solve for x
    x = 125,360,741.87/12,726.72
  6. Step 6: Final answer
    x = 9,850.20

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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.