Home / 20,316.25-30,441.56-7,821.64

Finding the Fourth Proportional to 20,316.25, 30,441.56 and 7,821.64

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Solution

The fourth proportional to 20,316.25, 30,441.56 and 7,821.64 is: 11,719.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.25 : 30,441.56 = 7,821.64 : x
  2. Step 2: Convert to fraction form
    20,316.25/30,441.56 = 7,821.64/x
  3. Step 3: Cross multiply
    20,316.25x = 30,441.56 × 7,821.64
  4. Step 4: Simplify right side
    20,316.25x = 238,102,922.30
  5. Step 5: Solve for x
    x = 238,102,922.30/20,316.25
  6. Step 6: Final answer
    x = 11,719.83

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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.