Home / 20,584.82-28,407.58-12,631.44

Finding the Fourth Proportional to 20,584.82, 28,407.58 and 12,631.44

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Solution

The fourth proportional to 20,584.82, 28,407.58 and 12,631.44 is: 17,431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.82 : 28,407.58 = 12,631.44 : x
  2. Step 2: Convert to fraction form
    20,584.82/28,407.58 = 12,631.44/x
  3. Step 3: Cross multiply
    20,584.82x = 28,407.58 × 12,631.44
  4. Step 4: Simplify right side
    20,584.82x = 358,828,642.32
  5. Step 5: Solve for x
    x = 358,828,642.32/20,584.82
  6. Step 6: Final answer
    x = 17,431.71

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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.