Home / 19,540.91-29,311.10-4,749.78

Finding the Fourth Proportional to 19,540.91, 29,311.10 and 4,749.78

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Solution

The fourth proportional to 19,540.91, 29,311.10 and 4,749.78 is: 7,124.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.91 : 29,311.10 = 4,749.78 : x
  2. Step 2: Convert to fraction form
    19,540.91/29,311.10 = 4,749.78/x
  3. Step 3: Cross multiply
    19,540.91x = 29,311.10 × 4,749.78
  4. Step 4: Simplify right side
    19,540.91x = 139,221,252.81
  5. Step 5: Solve for x
    x = 139,221,252.81/19,540.91
  6. Step 6: Final answer
    x = 7,124.61

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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.