Home / 19,990.44-29,976.30-5,945.28

Finding the Fourth Proportional to 19,990.44, 29,976.30 and 5,945.28

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Solution

The fourth proportional to 19,990.44, 29,976.30 and 5,945.28 is: 8,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.44 : 29,976.30 = 5,945.28 : x
  2. Step 2: Convert to fraction form
    19,990.44/29,976.30 = 5,945.28/x
  3. Step 3: Cross multiply
    19,990.44x = 29,976.30 × 5,945.28
  4. Step 4: Simplify right side
    19,990.44x = 178,217,496.86
  5. Step 5: Solve for x
    x = 178,217,496.86/19,990.44
  6. Step 6: Final answer
    x = 8,915.14

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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.