Home / 13,615.26-20,420.61-6,218.00

Finding the Fourth Proportional to 13,615.26, 20,420.61 and 6,218.00

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Solution

The fourth proportional to 13,615.26, 20,420.61 and 6,218.00 is: 9,325.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.26 : 20,420.61 = 6,218.00 : x
  2. Step 2: Convert to fraction form
    13,615.26/20,420.61 = 6,218.00/x
  3. Step 3: Cross multiply
    13,615.26x = 20,420.61 × 6,218.00
  4. Step 4: Simplify right side
    13,615.26x = 126,975,304.14
  5. Step 5: Solve for x
    x = 126,975,304.14/13,615.26
  6. Step 6: Final answer
    x = 9,325.96

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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.