Home / 20,120.36-30,181.17-9,591.53

Finding the Fourth Proportional to 20,120.36, 30,181.17 and 9,591.53

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Solution

The fourth proportional to 20,120.36, 30,181.17 and 9,591.53 is: 14,387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.36 : 30,181.17 = 9,591.53 : x
  2. Step 2: Convert to fraction form
    20,120.36/30,181.17 = 9,591.53/x
  3. Step 3: Cross multiply
    20,120.36x = 30,181.17 × 9,591.53
  4. Step 4: Simplify right side
    20,120.36x = 289,483,446.58
  5. Step 5: Solve for x
    x = 289,483,446.58/20,120.36
  6. Step 6: Final answer
    x = 14,387.59

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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.