Home / 18,701.12-25,796.16-11,142.48

Finding the Fourth Proportional to 18,701.12, 25,796.16 and 11,142.48

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Solution

The fourth proportional to 18,701.12, 25,796.16 and 11,142.48 is: 15,369.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.12 : 25,796.16 = 11,142.48 : x
  2. Step 2: Convert to fraction form
    18,701.12/25,796.16 = 11,142.48/x
  3. Step 3: Cross multiply
    18,701.12x = 25,796.16 × 11,142.48
  4. Step 4: Simplify right side
    18,701.12x = 287,433,196.88
  5. Step 5: Solve for x
    x = 287,433,196.88/18,701.12
  6. Step 6: Final answer
    x = 15,369.84

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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.