Home / 13,551.68-20,328.05-4,190.86

Finding the Fourth Proportional to 13,551.68, 20,328.05 and 4,190.86

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Solution

The fourth proportional to 13,551.68, 20,328.05 and 4,190.86 is: 6,286.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.68 : 20,328.05 = 4,190.86 : x
  2. Step 2: Convert to fraction form
    13,551.68/20,328.05 = 4,190.86/x
  3. Step 3: Cross multiply
    13,551.68x = 20,328.05 × 4,190.86
  4. Step 4: Simplify right side
    13,551.68x = 85,191,939.85
  5. Step 5: Solve for x
    x = 85,191,939.85/13,551.68
  6. Step 6: Final answer
    x = 6,286.45

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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.