Home / 20,941.14-31,370.58-12,157.68

Finding the Fourth Proportional to 20,941.14, 31,370.58 and 12,157.68

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Solution

The fourth proportional to 20,941.14, 31,370.58 and 12,157.68 is: 18,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.14 : 31,370.58 = 12,157.68 : x
  2. Step 2: Convert to fraction form
    20,941.14/31,370.58 = 12,157.68/x
  3. Step 3: Cross multiply
    20,941.14x = 31,370.58 × 12,157.68
  4. Step 4: Simplify right side
    20,941.14x = 381,393,473.05
  5. Step 5: Solve for x
    x = 381,393,473.05/20,941.14
  6. Step 6: Final answer
    x = 18,212.64

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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.