Home / 23,131.26-31,921.07-12,520.86

Finding the Fourth Proportional to 23,131.26, 31,921.07 and 12,520.86

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Solution

The fourth proportional to 23,131.26, 31,921.07 and 12,520.86 is: 17,278.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,131.26 : 31,921.07 = 12,520.86 : x
  2. Step 2: Convert to fraction form
    23,131.26/31,921.07 = 12,520.86/x
  3. Step 3: Cross multiply
    23,131.26x = 31,921.07 × 12,520.86
  4. Step 4: Simplify right side
    23,131.26x = 399,679,185.92
  5. Step 5: Solve for x
    x = 399,679,185.92/23,131.26
  6. Step 6: Final answer
    x = 17,278.75

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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.