Home / 13,407.12-20,111.64-3,546.28

Finding the Fourth Proportional to 13,407.12, 20,111.64 and 3,546.28

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Solution

The fourth proportional to 13,407.12, 20,111.64 and 3,546.28 is: 5,319.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.12 : 20,111.64 = 3,546.28 : x
  2. Step 2: Convert to fraction form
    13,407.12/20,111.64 = 3,546.28/x
  3. Step 3: Cross multiply
    13,407.12x = 20,111.64 × 3,546.28
  4. Step 4: Simplify right side
    13,407.12x = 71,321,538.49
  5. Step 5: Solve for x
    x = 71,321,538.49/13,407.12
  6. Step 6: Final answer
    x = 5,319.68

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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.