Home / 22,638.88-31,236.78-13,684.60

Finding the Fourth Proportional to 22,638.88, 31,236.78 and 13,684.60

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Solution

The fourth proportional to 22,638.88, 31,236.78 and 13,684.60 is: 18,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,638.88 : 31,236.78 = 13,684.60 : x
  2. Step 2: Convert to fraction form
    22,638.88/31,236.78 = 13,684.60/x
  3. Step 3: Cross multiply
    22,638.88x = 31,236.78 × 13,684.60
  4. Step 4: Simplify right side
    22,638.88x = 427,462,839.59
  5. Step 5: Solve for x
    x = 427,462,839.59/22,638.88
  6. Step 6: Final answer
    x = 18,881.80

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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.