Home / 13,638.30-20,457.46-3,777.36

Finding the Fourth Proportional to 13,638.30, 20,457.46 and 3,777.36

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Solution

The fourth proportional to 13,638.30, 20,457.46 and 3,777.36 is: 5,666.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.30 : 20,457.46 = 3,777.36 : x
  2. Step 2: Convert to fraction form
    13,638.30/20,457.46 = 3,777.36/x
  3. Step 3: Cross multiply
    13,638.30x = 20,457.46 × 3,777.36
  4. Step 4: Simplify right side
    13,638.30x = 77,275,191.11
  5. Step 5: Solve for x
    x = 77,275,191.11/13,638.30
  6. Step 6: Final answer
    x = 5,666.04

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Similar ratio
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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.