Home / 21,021.44-31,532.10-6,982.55

Finding the Fourth Proportional to 21,021.44, 31,532.10 and 6,982.55

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Solution

The fourth proportional to 21,021.44, 31,532.10 and 6,982.55 is: 10,473.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.44 : 31,532.10 = 6,982.55 : x
  2. Step 2: Convert to fraction form
    21,021.44/31,532.10 = 6,982.55/x
  3. Step 3: Cross multiply
    21,021.44x = 31,532.10 × 6,982.55
  4. Step 4: Simplify right side
    21,021.44x = 220,174,464.86
  5. Step 5: Solve for x
    x = 220,174,464.86/21,021.44
  6. Step 6: Final answer
    x = 10,473.81

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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.