Home / 13,801.12-20,701.68-3,412.64

Finding the Fourth Proportional to 13,801.12, 20,701.68 and 3,412.64

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Solution

The fourth proportional to 13,801.12, 20,701.68 and 3,412.64 is: 5,118.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.12 : 20,701.68 = 3,412.64 : x
  2. Step 2: Convert to fraction form
    13,801.12/20,701.68 = 3,412.64/x
  3. Step 3: Cross multiply
    13,801.12x = 20,701.68 × 3,412.64
  4. Step 4: Simplify right side
    13,801.12x = 70,647,381.24
  5. Step 5: Solve for x
    x = 70,647,381.24/13,801.12
  6. Step 6: Final answer
    x = 5,118.96

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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.