Home / 30,372.21-41,921.13-20,697.67

Finding the Fourth Proportional to 30,372.21, 41,921.13 and 20,697.67

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Solution

The fourth proportional to 30,372.21, 41,921.13 and 20,697.67 is: 28,567.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372.21 : 41,921.13 = 20,697.67 : x
  2. Step 2: Convert to fraction form
    30,372.21/41,921.13 = 20,697.67/x
  3. Step 3: Cross multiply
    30,372.21x = 41,921.13 × 20,697.67
  4. Step 4: Simplify right side
    30,372.21x = 867,669,611.28
  5. Step 5: Solve for x
    x = 867,669,611.28/30,372.21
  6. Step 6: Final answer
    x = 28,567.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.