Home / 13,638.72-20,457.36-4,404

Finding the Fourth Proportional to 13,638.72, 20,457.36 and 4,404

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Solution

The fourth proportional to 13,638.72, 20,457.36 and 4,404 is: 6,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.72 : 20,457.36 = 4,404 : x
  2. Step 2: Convert to fraction form
    13,638.72/20,457.36 = 4,404/x
  3. Step 3: Cross multiply
    13,638.72x = 20,457.36 × 4,404
  4. Step 4: Simplify right side
    13,638.72x = 90,094,213.44
  5. Step 5: Solve for x
    x = 90,094,213.44/13,638.72
  6. Step 6: Final answer
    x = 6,605.77

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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.