Home / 20,474.55-30,650.31-18,335.85

Finding the Fourth Proportional to 20,474.55, 30,650.31 and 18,335.85

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Solution

The fourth proportional to 20,474.55, 30,650.31 and 18,335.85 is: 27,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.55 : 30,650.31 = 18,335.85 : x
  2. Step 2: Convert to fraction form
    20,474.55/30,650.31 = 18,335.85/x
  3. Step 3: Cross multiply
    20,474.55x = 30,650.31 × 18,335.85
  4. Step 4: Simplify right side
    20,474.55x = 561,999,486.61
  5. Step 5: Solve for x
    x = 561,999,486.61/20,474.55
  6. Step 6: Final answer
    x = 27,448.69

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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.