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Finding the Fourth Proportional to 11,777.45, 16,254.41 and 6,742.49

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Solution

The fourth proportional to 11,777.45, 16,254.41 and 6,742.49 is: 9,305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,777.45 : 16,254.41 = 6,742.49 : x
  2. Step 2: Convert to fraction form
    11,777.45/16,254.41 = 6,742.49/x
  3. Step 3: Cross multiply
    11,777.45x = 16,254.41 × 6,742.49
  4. Step 4: Simplify right side
    11,777.45x = 109,595,081.90
  5. Step 5: Solve for x
    x = 109,595,081.90/11,777.45
  6. Step 6: Final answer
    x = 9,305.51

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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.