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Finding the Fourth Proportional to 19,166.29, 28,739.71 and 8,769.13

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Solution

The fourth proportional to 19,166.29, 28,739.71 and 8,769.13 is: 13,149.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,166.29 : 28,739.71 = 8,769.13 : x
  2. Step 2: Convert to fraction form
    19,166.29/28,739.71 = 8,769.13/x
  3. Step 3: Cross multiply
    19,166.29x = 28,739.71 × 8,769.13
  4. Step 4: Simplify right side
    19,166.29x = 252,022,065.61
  5. Step 5: Solve for x
    x = 252,022,065.61/19,166.29
  6. Step 6: Final answer
    x = 13,149.24

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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.