Home / 13,752.05-20,620.32-4,389.86

Finding the Fourth Proportional to 13,752.05, 20,620.32 and 4,389.86

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Solution

The fourth proportional to 13,752.05, 20,620.32 and 4,389.86 is: 6,582.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.05 : 20,620.32 = 4,389.86 : x
  2. Step 2: Convert to fraction form
    13,752.05/20,620.32 = 4,389.86/x
  3. Step 3: Cross multiply
    13,752.05x = 20,620.32 × 4,389.86
  4. Step 4: Simplify right side
    13,752.05x = 90,520,214.85
  5. Step 5: Solve for x
    x = 90,520,214.85/13,752.05
  6. Step 6: Final answer
    x = 6,582.31

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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.