Home / 20,537.82-28,345.68-11,587.86

Finding the Fourth Proportional to 20,537.82, 28,345.68 and 11,587.86

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Solution

The fourth proportional to 20,537.82, 28,345.68 and 11,587.86 is: 15,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.82 : 28,345.68 = 11,587.86 : x
  2. Step 2: Convert to fraction form
    20,537.82/28,345.68 = 11,587.86/x
  3. Step 3: Cross multiply
    20,537.82x = 28,345.68 × 11,587.86
  4. Step 4: Simplify right side
    20,537.82x = 328,465,771.44
  5. Step 5: Solve for x
    x = 328,465,771.44/20,537.82
  6. Step 6: Final answer
    x = 15,993.22

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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.