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Finding the Fourth Proportional to 19,131.98, 28,702.08 and 5,803.88

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Solution

The fourth proportional to 19,131.98, 28,702.08 and 5,803.88 is: 8,707.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.98 : 28,702.08 = 5,803.88 : x
  2. Step 2: Convert to fraction form
    19,131.98/28,702.08 = 5,803.88/x
  3. Step 3: Cross multiply
    19,131.98x = 28,702.08 × 5,803.88
  4. Step 4: Simplify right side
    19,131.98x = 166,583,284.56
  5. Step 5: Solve for x
    x = 166,583,284.56/19,131.98
  6. Step 6: Final answer
    x = 8,707.06

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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.