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Finding the Fourth Proportional to 19,321.29, 28,983.29 and 6,174.72

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Solution

The fourth proportional to 19,321.29, 28,983.29 and 6,174.72 is: 9,262.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.29 : 28,983.29 = 6,174.72 : x
  2. Step 2: Convert to fraction form
    19,321.29/28,983.29 = 6,174.72/x
  3. Step 3: Cross multiply
    19,321.29x = 28,983.29 × 6,174.72
  4. Step 4: Simplify right side
    19,321.29x = 178,963,669.56
  5. Step 5: Solve for x
    x = 178,963,669.56/19,321.29
  6. Step 6: Final answer
    x = 9,262.51

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1.5x scale

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.