Home / 20,120.58-30,181.50-9,591.74

Finding the Fourth Proportional to 20,120.58, 30,181.50 and 9,591.74

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Solution

The fourth proportional to 20,120.58, 30,181.50 and 9,591.74 is: 14,387.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.58 : 30,181.50 = 9,591.74 : x
  2. Step 2: Convert to fraction form
    20,120.58/30,181.50 = 9,591.74/x
  3. Step 3: Cross multiply
    20,120.58x = 30,181.50 × 9,591.74
  4. Step 4: Simplify right side
    20,120.58x = 289,493,100.81
  5. Step 5: Solve for x
    x = 289,493,100.81/20,120.58
  6. Step 6: Final answer
    x = 14,387.91

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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.