Home / 18,821.55-25,985.00-11,757.54

Finding the Fourth Proportional to 18,821.55, 25,985.00 and 11,757.54

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Solution

The fourth proportional to 18,821.55, 25,985.00 and 11,757.54 is: 16,232.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.55 : 25,985.00 = 11,757.54 : x
  2. Step 2: Convert to fraction form
    18,821.55/25,985.00 = 11,757.54/x
  3. Step 3: Cross multiply
    18,821.55x = 25,985.00 × 11,757.54
  4. Step 4: Simplify right side
    18,821.55x = 305,519,618.11
  5. Step 5: Solve for x
    x = 305,519,618.11/18,821.55
  6. Step 6: Final answer
    x = 16,232.44

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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.