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Finding the Fourth Proportional to 18,751.52, 28,141.13 and 8,890.83

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Solution

The fourth proportional to 18,751.52, 28,141.13 and 8,890.83 is: 13,342.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.52 : 28,141.13 = 8,890.83 : x
  2. Step 2: Convert to fraction form
    18,751.52/28,141.13 = 8,890.83/x
  3. Step 3: Cross multiply
    18,751.52x = 28,141.13 × 8,890.83
  4. Step 4: Simplify right side
    18,751.52x = 250,198,002.84
  5. Step 5: Solve for x
    x = 250,198,002.84/18,751.52
  6. Step 6: Final answer
    x = 13,342.81

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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.