Home / 20,514.57-28,316.84-12,448.59

Finding the Fourth Proportional to 20,514.57, 28,316.84 and 12,448.59

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Solution

The fourth proportional to 20,514.57, 28,316.84 and 12,448.59 is: 17,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.57 : 28,316.84 = 12,448.59 : x
  2. Step 2: Convert to fraction form
    20,514.57/28,316.84 = 12,448.59/x
  3. Step 3: Cross multiply
    20,514.57x = 28,316.84 × 12,448.59
  4. Step 4: Simplify right side
    20,514.57x = 352,504,669.01
  5. Step 5: Solve for x
    x = 352,504,669.01/20,514.57
  6. Step 6: Final answer
    x = 17,183.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.