Home / 23,142.11-31,936.12-12,531.74

Finding the Fourth Proportional to 23,142.11, 31,936.12 and 12,531.74

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Solution

The fourth proportional to 23,142.11, 31,936.12 and 12,531.74 is: 17,293.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,142.11 : 31,936.12 = 12,531.74 : x
  2. Step 2: Convert to fraction form
    23,142.11/31,936.12 = 12,531.74/x
  3. Step 3: Cross multiply
    23,142.11x = 31,936.12 × 12,531.74
  4. Step 4: Simplify right side
    23,142.11x = 400,214,961.44
  5. Step 5: Solve for x
    x = 400,214,961.44/23,142.11
  6. Step 6: Final answer
    x = 17,293.80

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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.