Home / 28,261.85-38,993.37-18,196.12

Finding the Fourth Proportional to 28,261.85, 38,993.37 and 18,196.12

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Solution

The fourth proportional to 28,261.85, 38,993.37 and 18,196.12 is: 25,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.85 : 38,993.37 = 18,196.12 : x
  2. Step 2: Convert to fraction form
    28,261.85/38,993.37 = 18,196.12/x
  3. Step 3: Cross multiply
    28,261.85x = 38,993.37 × 18,196.12
  4. Step 4: Simplify right side
    28,261.85x = 709,527,942.24
  5. Step 5: Solve for x
    x = 709,527,942.24/28,261.85
  6. Step 6: Final answer
    x = 25,105.50

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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.