Home / 20,686.89-30,796.35-20,563.87

Finding the Fourth Proportional to 20,686.89, 30,796.35 and 20,563.87

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Solution

The fourth proportional to 20,686.89, 30,796.35 and 20,563.87 is: 30,613.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.89 : 30,796.35 = 20,563.87 : x
  2. Step 2: Convert to fraction form
    20,686.89/30,796.35 = 20,563.87/x
  3. Step 3: Cross multiply
    20,686.89x = 30,796.35 × 20,563.87
  4. Step 4: Simplify right side
    20,686.89x = 633,292,137.87
  5. Step 5: Solve for x
    x = 633,292,137.87/20,686.89
  6. Step 6: Final answer
    x = 30,613.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.