Home / 31,261.72-43,141.30-17,115.88

Finding the Fourth Proportional to 31,261.72, 43,141.30 and 17,115.88

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Solution

The fourth proportional to 31,261.72, 43,141.30 and 17,115.88 is: 23,619.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,261.72 : 43,141.30 = 17,115.88 : x
  2. Step 2: Convert to fraction form
    31,261.72/43,141.30 = 17,115.88/x
  3. Step 3: Cross multiply
    31,261.72x = 43,141.30 × 17,115.88
  4. Step 4: Simplify right side
    31,261.72x = 738,401,313.84
  5. Step 5: Solve for x
    x = 738,401,313.84/31,261.72
  6. Step 6: Final answer
    x = 23,619.98

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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.