Home / 13,476.63-20,218.88-3,989.20

Finding the Fourth Proportional to 13,476.63, 20,218.88 and 3,989.20

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Solution

The fourth proportional to 13,476.63, 20,218.88 and 3,989.20 is: 5,984.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,476.63 : 20,218.88 = 3,989.20 : x
  2. Step 2: Convert to fraction form
    13,476.63/20,218.88 = 3,989.20/x
  3. Step 3: Cross multiply
    13,476.63x = 20,218.88 × 3,989.20
  4. Step 4: Simplify right side
    13,476.63x = 80,657,136.60
  5. Step 5: Solve for x
    x = 80,657,136.60/13,476.63
  6. Step 6: Final answer
    x = 5,984.96

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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.