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Finding the Fourth Proportional to 19,173.29, 28,750.19 and 8,776.13

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Solution

The fourth proportional to 19,173.29, 28,750.19 and 8,776.13 is: 13,159.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,173.29 : 28,750.19 = 8,776.13 : x
  2. Step 2: Convert to fraction form
    19,173.29/28,750.19 = 8,776.13/x
  3. Step 3: Cross multiply
    19,173.29x = 28,750.19 × 8,776.13
  4. Step 4: Simplify right side
    19,173.29x = 252,315,217.33
  5. Step 5: Solve for x
    x = 252,315,217.33/19,173.29
  6. Step 6: Final answer
    x = 13,159.73

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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.