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Finding the Fourth Proportional to 19,290.64, 28,936.03 and 6,803.88

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Solution

The fourth proportional to 19,290.64, 28,936.03 and 6,803.88 is: 10,205.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.64 : 28,936.03 = 6,803.88 : x
  2. Step 2: Convert to fraction form
    19,290.64/28,936.03 = 6,803.88/x
  3. Step 3: Cross multiply
    19,290.64x = 28,936.03 × 6,803.88
  4. Step 4: Simplify right side
    19,290.64x = 196,877,275.80
  5. Step 5: Solve for x
    x = 196,877,275.80/19,290.64
  6. Step 6: Final answer
    x = 10,205.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.