Home / 20,370.82-28,115.68-13,284.94

Finding the Fourth Proportional to 20,370.82, 28,115.68 and 13,284.94

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Solution

The fourth proportional to 20,370.82, 28,115.68 and 13,284.94 is: 18,335.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.82 : 28,115.68 = 13,284.94 : x
  2. Step 2: Convert to fraction form
    20,370.82/28,115.68 = 13,284.94/x
  3. Step 3: Cross multiply
    20,370.82x = 28,115.68 × 13,284.94
  4. Step 4: Simplify right side
    20,370.82x = 373,514,948.07
  5. Step 5: Solve for x
    x = 373,514,948.07/20,370.82
  6. Step 6: Final answer
    x = 18,335.79

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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.