Home / 20,217.58-30,331.86-11,458.65

Finding the Fourth Proportional to 20,217.58, 30,331.86 and 11,458.65

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Solution

The fourth proportional to 20,217.58, 30,331.86 and 11,458.65 is: 17,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.58 : 30,331.86 = 11,458.65 : x
  2. Step 2: Convert to fraction form
    20,217.58/30,331.86 = 11,458.65/x
  3. Step 3: Cross multiply
    20,217.58x = 30,331.86 × 11,458.65
  4. Step 4: Simplify right side
    20,217.58x = 347,562,015.93
  5. Step 5: Solve for x
    x = 347,562,015.93/20,217.58
  6. Step 6: Final answer
    x = 17,191.08

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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.