Home / 19,982.40-29,997.90-10,116.60

Finding the Fourth Proportional to 19,982.40, 29,997.90 and 10,116.60

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Solution

The fourth proportional to 19,982.40, 29,997.90 and 10,116.60 is: 15,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.40 : 29,997.90 = 10,116.60 : x
  2. Step 2: Convert to fraction form
    19,982.40/29,997.90 = 10,116.60/x
  3. Step 3: Cross multiply
    19,982.40x = 29,997.90 × 10,116.60
  4. Step 4: Simplify right side
    19,982.40x = 303,476,755.14
  5. Step 5: Solve for x
    x = 303,476,755.14/19,982.40
  6. Step 6: Final answer
    x = 15,187.20

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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.