Home / 13,157.10-18,125.91-9,170.94

Finding the Fourth Proportional to 13,157.10, 18,125.91 and 9,170.94

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Solution

The fourth proportional to 13,157.10, 18,125.91 and 9,170.94 is: 12,634.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.10 : 18,125.91 = 9,170.94 : x
  2. Step 2: Convert to fraction form
    13,157.10/18,125.91 = 9,170.94/x
  3. Step 3: Cross multiply
    13,157.10x = 18,125.91 × 9,170.94
  4. Step 4: Simplify right side
    13,157.10x = 166,231,633.06
  5. Step 5: Solve for x
    x = 166,231,633.06/13,157.10
  6. Step 6: Final answer
    x = 12,634.37

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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.