Home / 20,576.40-30,864.60-6,726.80

Finding the Fourth Proportional to 20,576.40, 30,864.60 and 6,726.80

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Solution

The fourth proportional to 20,576.40, 30,864.60 and 6,726.80 is: 10,090.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.40 : 30,864.60 = 6,726.80 : x
  2. Step 2: Convert to fraction form
    20,576.40/30,864.60 = 6,726.80/x
  3. Step 3: Cross multiply
    20,576.40x = 30,864.60 × 6,726.80
  4. Step 4: Simplify right side
    20,576.40x = 207,619,991.28
  5. Step 5: Solve for x
    x = 207,619,991.28/20,576.40
  6. Step 6: Final answer
    x = 10,090.20

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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.