Home / 13,431.44-18,534.12-12,440.72

Finding the Fourth Proportional to 13,431.44, 18,534.12 and 12,440.72

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Solution

The fourth proportional to 13,431.44, 18,534.12 and 12,440.72 is: 17,167.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.44 : 18,534.12 = 12,440.72 : x
  2. Step 2: Convert to fraction form
    13,431.44/18,534.12 = 12,440.72/x
  3. Step 3: Cross multiply
    13,431.44x = 18,534.12 × 12,440.72
  4. Step 4: Simplify right side
    13,431.44x = 230,577,797.37
  5. Step 5: Solve for x
    x = 230,577,797.37/13,431.44
  6. Step 6: Final answer
    x = 17,167.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.