Home / 13,169.10-18,175.07-7,505.87

Finding the Fourth Proportional to 13,169.10, 18,175.07 and 7,505.87

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Solution

The fourth proportional to 13,169.10, 18,175.07 and 7,505.87 is: 10,359.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.10 : 18,175.07 = 7,505.87 : x
  2. Step 2: Convert to fraction form
    13,169.10/18,175.07 = 7,505.87/x
  3. Step 3: Cross multiply
    13,169.10x = 18,175.07 × 7,505.87
  4. Step 4: Simplify right side
    13,169.10x = 136,419,675.13
  5. Step 5: Solve for x
    x = 136,419,675.13/13,169.10
  6. Step 6: Final answer
    x = 10,359.07

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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.