Home / 13,157.52-18,169.50-8,450.00

Finding the Fourth Proportional to 13,157.52, 18,169.50 and 8,450.00

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Solution

The fourth proportional to 13,157.52, 18,169.50 and 8,450.00 is: 11,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.52 : 18,169.50 = 8,450.00 : x
  2. Step 2: Convert to fraction form
    13,157.52/18,169.50 = 8,450.00/x
  3. Step 3: Cross multiply
    13,157.52x = 18,169.50 × 8,450.00
  4. Step 4: Simplify right side
    13,157.52x = 153,532,236.44
  5. Step 5: Solve for x
    x = 153,532,236.44/13,157.52
  6. Step 6: Final answer
    x = 11,668.79

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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.