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Finding the Fourth Proportional to 11,754.88, 16,219.20 and 6,784

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Solution

The fourth proportional to 11,754.88, 16,219.20 and 6,784 is: 9,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,754.88 : 16,219.20 = 6,784 : x
  2. Step 2: Convert to fraction form
    11,754.88/16,219.20 = 6,784/x
  3. Step 3: Cross multiply
    11,754.88x = 16,219.20 × 6,784
  4. Step 4: Simplify right side
    11,754.88x = 110,031,052.80
  5. Step 5: Solve for x
    x = 110,031,052.80/11,754.88
  6. Step 6: Final answer
    x = 9,360.46

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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.