Home / 13,933.48-20,905.42-5,615.86

Finding the Fourth Proportional to 13,933.48, 20,905.42 and 5,615.86

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Solution

The fourth proportional to 13,933.48, 20,905.42 and 5,615.86 is: 8,425.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,933.48 : 20,905.42 = 5,615.86 : x
  2. Step 2: Convert to fraction form
    13,933.48/20,905.42 = 5,615.86/x
  3. Step 3: Cross multiply
    13,933.48x = 20,905.42 × 5,615.86
  4. Step 4: Simplify right side
    13,933.48x = 117,401,911.96
  5. Step 5: Solve for x
    x = 117,401,911.96/13,933.48
  6. Step 6: Final answer
    x = 8,425.89

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1.5x scale

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.