Home / 20,433.98-30,672.42-18,108.86

Finding the Fourth Proportional to 20,433.98, 30,672.42 and 18,108.86

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Solution

The fourth proportional to 20,433.98, 30,672.42 and 18,108.86 is: 27,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.98 : 30,672.42 = 18,108.86 : x
  2. Step 2: Convert to fraction form
    20,433.98/30,672.42 = 18,108.86/x
  3. Step 3: Cross multiply
    20,433.98x = 30,672.42 × 18,108.86
  4. Step 4: Simplify right side
    20,433.98x = 555,442,559.64
  5. Step 5: Solve for x
    x = 555,442,559.64/20,433.98
  6. Step 6: Final answer
    x = 27,182.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.