Home / 21,331.25-31,997.04-13,982.24

Finding the Fourth Proportional to 21,331.25, 31,997.04 and 13,982.24

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Solution

The fourth proportional to 21,331.25, 31,997.04 and 13,982.24 is: 20,973.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.25 : 31,997.04 = 13,982.24 : x
  2. Step 2: Convert to fraction form
    21,331.25/31,997.04 = 13,982.24/x
  3. Step 3: Cross multiply
    21,331.25x = 31,997.04 × 13,982.24
  4. Step 4: Simplify right side
    21,331.25x = 447,390,132.58
  5. Step 5: Solve for x
    x = 447,390,132.58/21,331.25
  6. Step 6: Final answer
    x = 20,973.47

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.