Home / 12,129.26-18,180.45-5,107.23

Finding the Fourth Proportional to 12,129.26, 18,180.45 and 5,107.23

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Solution

The fourth proportional to 12,129.26, 18,180.45 and 5,107.23 is: 7,655.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.26 : 18,180.45 = 5,107.23 : x
  2. Step 2: Convert to fraction form
    12,129.26/18,180.45 = 5,107.23/x
  3. Step 3: Cross multiply
    12,129.26x = 18,180.45 × 5,107.23
  4. Step 4: Simplify right side
    12,129.26x = 92,851,739.65
  5. Step 5: Solve for x
    x = 92,851,739.65/12,129.26
  6. Step 6: Final answer
    x = 7,655.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.