Home / 13,381.55-20,073.47-3,520.88

Finding the Fourth Proportional to 13,381.55, 20,073.47 and 3,520.88

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Solution

The fourth proportional to 13,381.55, 20,073.47 and 3,520.88 is: 5,281.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.55 : 20,073.47 = 3,520.88 : x
  2. Step 2: Convert to fraction form
    13,381.55/20,073.47 = 3,520.88/x
  3. Step 3: Cross multiply
    13,381.55x = 20,073.47 × 3,520.88
  4. Step 4: Simplify right side
    13,381.55x = 70,676,161.08
  5. Step 5: Solve for x
    x = 70,676,161.08/13,381.55
  6. Step 6: Final answer
    x = 5,281.61

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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.