Home / 13,929.72-20,879.90-4,567.30

Finding the Fourth Proportional to 13,929.72, 20,879.90 and 4,567.30

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Solution

The fourth proportional to 13,929.72, 20,879.90 and 4,567.30 is: 6,846.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.72 : 20,879.90 = 4,567.30 : x
  2. Step 2: Convert to fraction form
    13,929.72/20,879.90 = 4,567.30/x
  3. Step 3: Cross multiply
    13,929.72x = 20,879.90 × 4,567.30
  4. Step 4: Simplify right side
    13,929.72x = 95,364,662.87
  5. Step 5: Solve for x
    x = 95,364,662.87/13,929.72
  6. Step 6: Final answer
    x = 6,846.13

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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.