Home / 13,438.58-20,157.84-3,577.86

Finding the Fourth Proportional to 13,438.58, 20,157.84 and 3,577.86

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Solution

The fourth proportional to 13,438.58, 20,157.84 and 3,577.86 is: 5,366.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.58 : 20,157.84 = 3,577.86 : x
  2. Step 2: Convert to fraction form
    13,438.58/20,157.84 = 3,577.86/x
  3. Step 3: Cross multiply
    13,438.58x = 20,157.84 × 3,577.86
  4. Step 4: Simplify right side
    13,438.58x = 72,121,929.42
  5. Step 5: Solve for x
    x = 72,121,929.42/13,438.58
  6. Step 6: Final answer
    x = 5,366.78

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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.