Home / 13,347.11-20,023.53-3,987.86

Finding the Fourth Proportional to 13,347.11, 20,023.53 and 3,987.86

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Solution

The fourth proportional to 13,347.11, 20,023.53 and 3,987.86 is: 5,982.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.11 : 20,023.53 = 3,987.86 : x
  2. Step 2: Convert to fraction form
    13,347.11/20,023.53 = 3,987.86/x
  3. Step 3: Cross multiply
    13,347.11x = 20,023.53 × 3,987.86
  4. Step 4: Simplify right side
    13,347.11x = 79,851,034.35
  5. Step 5: Solve for x
    x = 79,851,034.35/13,347.11
  6. Step 6: Final answer
    x = 5,982.65

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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.