Home / 20,631-28,467.48-11,675.64

Finding the Fourth Proportional to 20,631, 28,467.48 and 11,675.64

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Solution

The fourth proportional to 20,631, 28,467.48 and 11,675.64 is: 16,110.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631 : 28,467.48 = 11,675.64 : x
  2. Step 2: Convert to fraction form
    20,631/28,467.48 = 11,675.64/x
  3. Step 3: Cross multiply
    20,631x = 28,467.48 × 11,675.64
  4. Step 4: Simplify right side
    20,631x = 332,376,048.19
  5. Step 5: Solve for x
    x = 332,376,048.19/20,631
  6. Step 6: Final answer
    x = 16,110.52

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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.