Home / 12,423.42-17,144.32-7,121.32

Finding the Fourth Proportional to 12,423.42, 17,144.32 and 7,121.32

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Solution

The fourth proportional to 12,423.42, 17,144.32 and 7,121.32 is: 9,827.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.42 : 17,144.32 = 7,121.32 : x
  2. Step 2: Convert to fraction form
    12,423.42/17,144.32 = 7,121.32/x
  3. Step 3: Cross multiply
    12,423.42x = 17,144.32 × 7,121.32
  4. Step 4: Simplify right side
    12,423.42x = 122,090,067.57
  5. Step 5: Solve for x
    x = 122,090,067.57/12,423.42
  6. Step 6: Final answer
    x = 9,827.41

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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.