Home / 22,611.37-31,203.78-12,540.75

Finding the Fourth Proportional to 22,611.37, 31,203.78 and 12,540.75

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Solution

The fourth proportional to 22,611.37, 31,203.78 and 12,540.75 is: 17,306.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,611.37 : 31,203.78 = 12,540.75 : x
  2. Step 2: Convert to fraction form
    22,611.37/31,203.78 = 12,540.75/x
  3. Step 3: Cross multiply
    22,611.37x = 31,203.78 × 12,540.75
  4. Step 4: Simplify right side
    22,611.37x = 391,318,804.04
  5. Step 5: Solve for x
    x = 391,318,804.04/22,611.37
  6. Step 6: Final answer
    x = 17,306.28

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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.