Home / 20,261.21-30,406.08-7,114.60

Finding the Fourth Proportional to 20,261.21, 30,406.08 and 7,114.60

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Solution

The fourth proportional to 20,261.21, 30,406.08 and 7,114.60 is: 10,676.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.21 : 30,406.08 = 7,114.60 : x
  2. Step 2: Convert to fraction form
    20,261.21/30,406.08 = 7,114.60/x
  3. Step 3: Cross multiply
    20,261.21x = 30,406.08 × 7,114.60
  4. Step 4: Simplify right side
    20,261.21x = 216,327,161.46
  5. Step 5: Solve for x
    x = 216,327,161.46/20,261.21
  6. Step 6: Final answer
    x = 10,676.91

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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.