Home / 21,467.43-29,620.35-20,759.49

Finding the Fourth Proportional to 21,467.43, 29,620.35 and 20,759.49

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Solution

The fourth proportional to 21,467.43, 29,620.35 and 20,759.49 is: 28,643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,467.43 : 29,620.35 = 20,759.49 : x
  2. Step 2: Convert to fraction form
    21,467.43/29,620.35 = 20,759.49/x
  3. Step 3: Cross multiply
    21,467.43x = 29,620.35 × 20,759.49
  4. Step 4: Simplify right side
    21,467.43x = 614,903,359.62
  5. Step 5: Solve for x
    x = 614,903,359.62/21,467.43
  6. Step 6: Final answer
    x = 28,643.55

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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.