Home / 31,560.12-43,537.35-20,651.85

Finding the Fourth Proportional to 31,560.12, 43,537.35 and 20,651.85

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Solution

The fourth proportional to 31,560.12, 43,537.35 and 20,651.85 is: 28,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,560.12 : 43,537.35 = 20,651.85 : x
  2. Step 2: Convert to fraction form
    31,560.12/43,537.35 = 20,651.85/x
  3. Step 3: Cross multiply
    31,560.12x = 43,537.35 × 20,651.85
  4. Step 4: Simplify right side
    31,560.12x = 899,126,821.60
  5. Step 5: Solve for x
    x = 899,126,821.60/31,560.12
  6. Step 6: Final answer
    x = 28,489.33

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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.