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Finding the Fourth Proportional to 19,174.08, 28,751.70 and 7,157.88

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Solution

The fourth proportional to 19,174.08, 28,751.70 and 7,157.88 is: 10,733.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.08 : 28,751.70 = 7,157.88 : x
  2. Step 2: Convert to fraction form
    19,174.08/28,751.70 = 7,157.88/x
  3. Step 3: Cross multiply
    19,174.08x = 28,751.70 × 7,157.88
  4. Step 4: Simplify right side
    19,174.08x = 205,801,218.40
  5. Step 5: Solve for x
    x = 205,801,218.40/19,174.08
  6. Step 6: Final answer
    x = 10,733.30

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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.