Home / 13,719.06-20,590.20-5,404.86

Finding the Fourth Proportional to 13,719.06, 20,590.20 and 5,404.86

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Solution

The fourth proportional to 13,719.06, 20,590.20 and 5,404.86 is: 8,111.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.06 : 20,590.20 = 5,404.86 : x
  2. Step 2: Convert to fraction form
    13,719.06/20,590.20 = 5,404.86/x
  3. Step 3: Cross multiply
    13,719.06x = 20,590.20 × 5,404.86
  4. Step 4: Simplify right side
    13,719.06x = 111,287,148.37
  5. Step 5: Solve for x
    x = 111,287,148.37/13,719.06
  6. Step 6: Final answer
    x = 8,111.86

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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.