Home / 20,668.58-30,993.14-14,435.63

Finding the Fourth Proportional to 20,668.58, 30,993.14 and 14,435.63

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Solution

The fourth proportional to 20,668.58, 30,993.14 and 14,435.63 is: 21,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.58 : 30,993.14 = 14,435.63 : x
  2. Step 2: Convert to fraction form
    20,668.58/30,993.14 = 14,435.63/x
  3. Step 3: Cross multiply
    20,668.58x = 30,993.14 × 14,435.63
  4. Step 4: Simplify right side
    20,668.58x = 447,405,501.58
  5. Step 5: Solve for x
    x = 447,405,501.58/20,668.58
  6. Step 6: Final answer
    x = 21,646.65

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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.