Home / 13,672.04-20,507.76-3,811.05

Finding the Fourth Proportional to 13,672.04, 20,507.76 and 3,811.05

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Solution

The fourth proportional to 13,672.04, 20,507.76 and 3,811.05 is: 5,716.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.04 : 20,507.76 = 3,811.05 : x
  2. Step 2: Convert to fraction form
    13,672.04/20,507.76 = 3,811.05/x
  3. Step 3: Cross multiply
    13,672.04x = 20,507.76 × 3,811.05
  4. Step 4: Simplify right side
    13,672.04x = 78,156,098.75
  5. Step 5: Solve for x
    x = 78,156,098.75/13,672.04
  6. Step 6: Final answer
    x = 5,716.49

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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.