Home / 20,514.66-28,319.69-12,015.60

Finding the Fourth Proportional to 20,514.66, 28,319.69 and 12,015.60

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Solution

The fourth proportional to 20,514.66, 28,319.69 and 12,015.60 is: 16,587.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.66 : 28,319.69 = 12,015.60 : x
  2. Step 2: Convert to fraction form
    20,514.66/28,319.69 = 12,015.60/x
  3. Step 3: Cross multiply
    20,514.66x = 28,319.69 × 12,015.60
  4. Step 4: Simplify right side
    20,514.66x = 340,278,067.16
  5. Step 5: Solve for x
    x = 340,278,067.16/20,514.66
  6. Step 6: Final answer
    x = 16,587.07

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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.