Home / 23,131.44-31,921.43-12,521.12

Finding the Fourth Proportional to 23,131.44, 31,921.43 and 12,521.12

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Solution

The fourth proportional to 23,131.44, 31,921.43 and 12,521.12 is: 17,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,131.44 : 31,921.43 = 12,521.12 : x
  2. Step 2: Convert to fraction form
    23,131.44/31,921.43 = 12,521.12/x
  3. Step 3: Cross multiply
    23,131.44x = 31,921.43 × 12,521.12
  4. Step 4: Simplify right side
    23,131.44x = 399,691,833.39
  5. Step 5: Solve for x
    x = 399,691,833.39/23,131.44
  6. Step 6: Final answer
    x = 17,279.16

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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.