Home / 13,630.46-20,445.68-4,271.21

Finding the Fourth Proportional to 13,630.46, 20,445.68 and 4,271.21

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Solution

The fourth proportional to 13,630.46, 20,445.68 and 4,271.21 is: 6,406.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.46 : 20,445.68 = 4,271.21 : x
  2. Step 2: Convert to fraction form
    13,630.46/20,445.68 = 4,271.21/x
  3. Step 3: Cross multiply
    13,630.46x = 20,445.68 × 4,271.21
  4. Step 4: Simplify right side
    13,630.46x = 87,327,771.52
  5. Step 5: Solve for x
    x = 87,327,771.52/13,630.46
  6. Step 6: Final answer
    x = 6,406.81

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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.