Home / 18,743.72-25,856.10-12,021.87

Finding the Fourth Proportional to 18,743.72, 25,856.10 and 12,021.87

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Solution

The fourth proportional to 18,743.72, 25,856.10 and 12,021.87 is: 16,583.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.72 : 25,856.10 = 12,021.87 : x
  2. Step 2: Convert to fraction form
    18,743.72/25,856.10 = 12,021.87/x
  3. Step 3: Cross multiply
    18,743.72x = 25,856.10 × 12,021.87
  4. Step 4: Simplify right side
    18,743.72x = 310,838,672.91
  5. Step 5: Solve for x
    x = 310,838,672.91/18,743.72
  6. Step 6: Final answer
    x = 16,583.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.