Home / 13,605.36-20,407.20-3,743.88

Finding the Fourth Proportional to 13,605.36, 20,407.20 and 3,743.88

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Solution

The fourth proportional to 13,605.36, 20,407.20 and 3,743.88 is: 5,615.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.36 : 20,407.20 = 3,743.88 : x
  2. Step 2: Convert to fraction form
    13,605.36/20,407.20 = 3,743.88/x
  3. Step 3: Cross multiply
    13,605.36x = 20,407.20 × 3,743.88
  4. Step 4: Simplify right side
    13,605.36x = 76,402,107.94
  5. Step 5: Solve for x
    x = 76,402,107.94/13,605.36
  6. Step 6: Final answer
    x = 5,615.59

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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.